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Slow Cooker Mashed Potatoes

Posted by Monica Matheny on Friday, November 19th, 2010
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Mashed Potatoes

I often run into two challenges when I'm cooking a big meal:

  • timing everything so that it is all finished at the same time and everything is hot without being overcooked.
  • juggling the stove top burners and oven space so there is enough room to cook everything.

Using the slower cooker can help with both of those challenges. It is especially a lifesaver on occasions like Thanksgiving when you're cooking for more people than usual and the kitchen tends to get way too hectic before meal time.

This slower cooker mashed potatoes recipe is delicious, something you can start early in the day, and can be completed long before the rest of the meal. These stay warm in the slow cooker for a least 2 hours after they've been cooked and mashed. No last minute panic when it comes to the mashed potatoes. Oh, what a relief it is!

Here are some general tips for making better mashed potatoes:

1.  Choose the right potatoes. Yukon gold or russets are recommended. Other varieties don't have the right combination of texture and starch to make them as suitable for mashing. I'm partial to Yukon golds because of their richer flavor. However, the russets give you a fluffier result.

2. Avoid gluey mashed potatoes. This is a common problem. It helps to soak the peeled, chopped potatoes in water for at least 30 minutes before cooking them. This leeches out some of the starch, and if there's too much starch that can make them gluey. Soak, drain, and rinse your raw potatoes before cooking them. Do this 1-3 times. This makes a huge difference. Over mixing the potatoes can also make them gluey.

3. Peel, chop, and soak the day before.  This is a convenient make-ahead tip. You can peel, chop, and soak your potatoes in water in the refrigerator for up to 24 hours in advance. This can be a big time saver on cooking day, since the peeling and chopping take the most preparation time. Plus, you've already taken care of the soaking in #2 above.

Slow Cookers are not all the same: 
They come in many shapes and sizes, and the temperatures at different settings can vary.

  • A HIGH setting can vary by 20 or more degrees in different slow cookers. Many newer units heat at higher temperature than older units due to concerns about food safety. 
  • The size of your slow cooker also effects cooking time. Your slow cooker should be 1/2 to 3/4 full for most efficient cooking. 
  • The shape of your slow cooker can effect cooking times. The traditional Crock Pot that is tall and round heats from the bottom and sides provides even heat. Some of the newer slow cookers sit on bases that only heat from the bottom, requiring periodic stirring and longer cooking times in order to cook food evenly. 
  • The beginning temperature of your food will also effect cooking times. It is best to always start with room temperature food in order to achieve consistent cooking times. If you're adding food straight from the refrigerator, you should build in extra cooking time.

The first time you make these mashed potatoes, be sure to build in enough time so that your potatoes are sure to be done by mealtime. Some trial and error may be necessary to find the right cooking time for your particular slow cooker.

click here for Amazon link to the 6-1/2 qt Crock Pot I use
(rated #1 by Cook's Illustrated)

Keep a lid on it!
Did you know that it adds 30 minutes to the cooking time every time you lift the lid of the slow cooker? So, don't be tempted to lift the lid numerous times while they're cooking. Wait until you think they should be finished to lift the lid and check for doneness.

 

Step-by-step photos for making Slower Cooker Mashed Potatoes.

 

Step 1. Assemble your ingredients: Potatoes (I used Yukon golds), chicken broth (optional--use water or vegetable broth for a vegetarian version), evaporated milk, butter, salt, and pepper.

ingredients

 

Step 2. Peel the potatoes and chop them into 1" cubes.

Step 3. Soak the potatoes in water for at least 30 minutes to leech out some of the starch and avoid gluey potatoes. Drain and rinse.

soaking potatoes2

 

Step 4. Add drained potatoes to slow cooker that has been sprayed with cooking oil. I use a 6-quart slower cooker. Add water and chicken broth.

Step 5. Cook on high for approx. 4-6 hours. Pierce a few of the potatoes (on top and in the bottom) and make sure they are very tender--they should break apart easily.


slower cooker 1  slower cooker 2

 

Step 6. Drain the potatoes in a colander and return them to slow cooker. 

Step 7. Add butter, salt and pepper. 

NOTE: If you're counting calories, you may omit or reduce the butter. It sure does make them taste good, though. I added 3 tablespoons--less than most recipes call for, but enough to add delicious flavor.

slower cooker 3  slower cooker 4

 

Step 8. With a potato masher, ricer, or electric mixer, mash the potatoes. You can mash them right in the slower cooker bowl.

Step. 9. Gradually add evaporated milk. You may or may not need the whole can to get the consistency you like. I used a whole can in mine. If the potatoes are too dry, add water or chicken broth in small amounts until they're right. Mash or beat them until they're the way you like them--completely smooth or chunky. Suit your fancy. Mine are a little bit chunky. Don't over mix them--that can also lead to gluey potatoes.

mixing potatoes  mixed 2

 

Step. 10. Taste and adjust seasonings.

Your potatoes are ready to eat! You can chow down now, or put the slower cooker on a low or warm setting and hold them for up to 2 hours. Give them a stir before serving. You can add a little liquid if they've dried out; although mine were still perfect after 2 hours and a quick stir. These can be served directly from the slow cooker bowl, or you can transfer them to another serving piece.

potatoes mixed

Got leftovers? Read my post about How to Freeze Mashed Potatoes. Or make my potato soup recipe with your leftover mashed potatoes--easy and delicious!

Need gravy? You've gotta soak these potatoes in gravy. Check out my post about Make-Ahead Turkey Gravy.

Variations to try:

  • For "smashed" potatoes, don't peel the potatoes. Chop them with the skin on and proceed with the same directions; except mash them less so that they are very chunky and have lots of texture.
  • For cheesy potatoes--mix in grated Parmesan or another favorite cheese.
  • For vegetarian mashed potatoes--replace the chicken broth with water or vegetable stock.
  • Many additional herbs and seasonings can be added (although if serving them with gravy, I'd stick with salt and pepper). Try mixing in roasted garlic, minced chives, or any favorite chopped herb like thyme, rosemary, dill or tarragon. Get creative!

Hope you like this recipe as much as I do. These taste fantastic and take some of the stress out of preparing a big meal. They're finished way ahead of time, free up stove top space for other things, and are hot and ready when it's time to eat.

in bowl

Are you a smooth or chunky mashed potato fan?

Make it a yummy day!

Other posts that may interest you:

Link directly to this recipe Print this recipe
Slow Cooker Mashed Potatoes
By Monica              Servings: Makes 7 cups
Ingredients
  • 5 lbs. Yukon gold or russet potatoes, peeled and chopped into 1" cubes
  • 2 cups water
  • 1 cup low sodium chicken broth
  • 1-1/2 teaspoons kosher salt
  • 3/4 teaspoon ground black pepper
  • 3 tablespoons butter
  • 1 12-oz. can evaporated milk
Directions
Soak the peeled, chopped potatoes in water for at least 30 min. to leech out some of the starch and avoid gluey potatoes.* Spray 6 quart (or larger) slow cooker with cooking spray. Add drained and rinsed potatoes, water, and chicken broth. Cover and cook on high for 4-6 hours (slow cooker temperatures may vary), or until potatoes come apart easily when pierced with a fork. Drain potatoes and return to slow cooker. Add salt, pepper and butter. Use electric mixer or potato masher to mash potatoes in slow cooker bowl. Gradually add evaporated milk until desired consistency. Taste and adjust seasonings. Serve right away or cover and keep warm on low setting for up to 2 hours.

* MAKE-AHEAD TIP: You can peel, chop, and soak your potatoes in water in the refrigerator for up to 24 hours in advance.

VARIATIONS:
--For "smashed" potatoes, don't peel the potatoes. Chop them and proceed with the same directions; except mash them less so that they are very chunky and have lots of texture.
--For cheesy potatoes--mix in grated Parmesan or other cheese.
--Vegetarian mashed potatoes--replace the chicken broth with water or vegetable stock.
--Many additional herbs and seasonings can be added (although if serving them with gravy, I'd stick with salt and pepper). Try mixing in roasted garlic, minced chives, or any favorite chopped herb like thyme, rosemary, dill or tarragon. Get creative!
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32 Comments
Emily Koch 2 years ago
These look so delicious!!!!! You may have just convinced me to add a slow cooker to our wedding registry. :)

Reply
Monica 2 years ago
Hi Emily! DEFINITELY put a slow cooker on your registry. You won't regret it. There are so many things to cook this way. You'll get to try out these potatoes when you and James are here for Thanksgiving. :-)

Reply
Sandra 2 years ago
Monica, soaking the potatoes also makes these a better version than unsoaked for the diabetic in the family.  He or she still needs to practice a little restraint.

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Monica 2 years ago
Sandra. That is a great tip! I hadn't thought of removing some of the starch as being a good thing for diabetics. As for restraint . . . that's a little harder to accomplish!

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Sharon 2 years ago
I am sooooooo going to use this recipe since I have to make mashed potatoes for Thanksgiving.  Do I need to double it for 12 people?

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Monica 2 years ago
Hi Sharon! I think you'll love this easy, yummy recipe. Good question about the number of servings. 5 lbs of potatoes (mashed) is supposed to serve 14-18 people. So, you should be safe with one batch, unless you want lots of leftovers.

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This is a great tip, Monica! Also good to know re: soaking the potatoes for the diabetics. I have a friend I'm passing this along to for that very reason...

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Monica 2 years ago
Hi Sandie. The soaking thing turns out to have double benefits. Who knew? The benefit for diabetics was new to me, but it makes sense.
Thanks for stopping by!

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Diane 2 years ago
This sounds wonderful! And I look forward to the how to freeze instructions as my family size is getting smaller as the years go by. What a time saver that will be - just come home from work and reheat. I can making my own microwave meals to take to work and save money and not have all those mystery ingredients in them. I do love the yukon gold smashed potatoes!

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Monica 2 years ago
Hi Diane. I will have a post about freezing mashed potatoes coming soon--before Thanksgiving. It's easy and a great way to deal with leftovers. I totally relate to your need to freeze and reheat as your family has gotten smaller. King-Man and I have the same situation. I'm always looking for ways to make a recipe, divide it into multiple meals, and freeze for easy heating and eating later. Thanks for the comment!

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Rich 2 years ago
I am a chunky mashed potato fan, for sure, but I'll eat the smooth, no problem at all - especially if they're made like that!

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Even before i could comment, i'd love to say that the pictures look so amazing! I wish i could simply glub the Mashed Potato recipe. so yummy! ha-ha. good dish and it can be prepared quickly has well. thanks for allowing me to comment here :)

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Amanda 2 years ago
I'm making these right now for Thanksgiving and am so excited!  Thanks for this great recipe and the freezing how to!

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Monica 2 years ago
Hi Amanda--How fun knowing that you're making these mashed potatoes. Thanks so much for letting me know. Hope you like them!

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Amanda 2 years ago
Monica,

I think I did something wrong!  My potatoes wouldn't smash!!!

I soaked them overnight in the refrigerator, drained them, placed them in the crock pot with the water and chicken broth and let them cook for 4+ hours.  By the end of that time there were some that were nearing the soft point, but other that were still downright crunchy.  In an act of desperation (because it was after 6:00pm at this point) we put them in the microwave hoping to soften them up a bit.  Microwaved for almost 7 minutes then returned to the crock pot, added butter and attempted to mash with a hand mixer.  The mixer wouldn't even cut through them.  It was shocking!  

So, we melted butter on them,  put some salt and pepper on them and ate them just like they were and they were so tasty anyway.  Sort of like fried potatoes, but a little healthier!

I'd still like to figure out what I did wrong though.  Any ideas?  Oh, and I was using Russets.

Reply
Monica 2 years ago
Amanda. Oh my goodness. I'm so sorry you had such a bad experience making the slower cooker mashed potatoes. Especially for an important meal like Thanksgiving. That's the worst time for something like this to happen. Timing is so critical when cooking a big meal like this--in fact that is the whole point of using the slow cooker for the mashed potatoes--saving time and last minute hassle. You had the opposite experience.  I honestly don't know what went wrong. The only thing I can think of is that our slow cookers cook at different heat levels. I don't know what else could explain why your potatoes didn't get done in the same amount of time as mine. I actually made another batch of these on Thanksgiving day myself, and I used russets this time--just wanted to compare them with the Yukon golds. Soaked them overnight. Mine cooked and mashed fine after a little over 4 hours in the slow cooker. I would have been in a panic if they were still crunchy then, so I can only imagine what a bummer that was for you. Thanks so much for letting me know. Although it's too late to save your Thanksgiving meal, I will put an update in my post about your experience. If any other readers out there have any thoughts on this, please let us know. So sorry this recipe didn't work out for you, Amanda.

Reply
Monica 2 years ago
Hi Amanda. I was fretting last night about your problem making these mashed potatoes and did some research on slow cookers. I learned a lot about how much they can vary and have differences in cooking temperatures and evenness. So, I added a whole section to this post about slow cookers and making cooking time adjustments. This does seem to be the most likely reason for your experience. I'm sorry this wasn't figured out in time to save you from a disappointment on Thanksgiving, but hopefully this will help you and others with future batches. Again, thanks very much for letting me know you had a problem. I'm sorry I didn't figure this out sooner.

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Amanda 2 years ago
Monica,

After reading your addition to the post I think I know what happened.  First of all, I went straight from refrigerator to crock pot so they were COLD when they started so 4 hours was probably not enough.  Second, my crock pot was probably too full.  It was definitely 3/4 full if not more.  

I'm definitely going to try this again, though.  I will figure it out! LOL

Thanks for your help!

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Sharon 2 years ago
Mine were not done after 4 hours either and mine were not refrigerated.  Put them on the stove and finished cooking them.

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Monica 2 years ago
Sharon,
Well, dang it. What a drag that you had to finish your potatoes on the stove--could have just done that to begin with. So sorry these didn't work out as planned. It's becoming clear that there are too many variables to recommend a single cook time for all slow cookers. After Amanda's experience (above), I changed the instructions and recipe to suggest a cooking time of 4-6 hours. I guess the first time other's try this recipe, it's best to allow more time until you figure out how long the potatoes will take in your slow cooker. Mine must cook hotter than yours and Amanda's (???). I have heard from others (see Jan's comments with my Potato Soup post) whose mashed potatoes turned out well in the slow cooker; otherwise I would begin to think I'd lost my mind on this one! Sorry this didn't work for you, Sharon. :-(

Reply
Amanda 2 years ago
Hi, Monica!

Just wanted to give you an update on my journey with the slow-cooker potatoes.  I tried them again for Christmas and they were, without a doubt, the best mashed potatoes I've ever made.  I chopped and soaked that morning so they would be room temperature when I put them in the crock pot and I think that definitely made a huge difference.  By the time 4 hours rolled around there was so little moisture left in the crock pot that I went ahead and mashed the potatoes without draining them at all.  They were so tasty!  Thanks so much for a wonderful recipe that I'll be using for years to come.

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Monica 2 years ago
Hi Amanda. Hooray! I'm so glad your mashed potatoes turned out so well the second time around. Looks like you figured out what went wrong the first time. Good for you! Thanks so much for letting me know. I appreciate the update. Happy New Year to you and yours!

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Pam 2 years ago
Hi, I'm always looking for recipes--especially potatoes--to make my life easier :-)  Thanks for this recipe and will try it soon.
I missed out on the freezing directions. Would you mind posting again?
Thanks so much and have a great evening!
Pam

Reply
Monica 2 years ago
Hi Pam.

I just read your questions about freezing these. So sorry for the ridiculously long delay in responding. My comments email reminders weren't working for awhile, and your question must have slipped through the cracks then. I apologize.

I did a post about freezing mashed potatoes that you can read here: http://www.theyummylife.com/blog/2010/11/98/How+to+Freeze+Mashed+Potatoes


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Charlotte 2 years ago
Has anyone tried this?...Take 4 Russet Potatoes (chopped,soaked) Placed in the bottom of slow cooker.  Then place thin sliced boneless porkchops and a jar of pork gravy and a can of Golden Cream of Mushroom Soup?  Cook for 5 hours on Low, remove Porkchops and then mash the potatoes?  I really want to try this.  Do you think this would work?????

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Heather 2 years ago
Charlotte,
I have tried this and many other variations, like potatoes with chicken breasts with cream of chicken and cheese soup.  It is delicious!  Not sure about the low cooking temp because I always do mine on high, since I can never seem to plan that much ahead LOL.
But yes, def try it!  Think of all the different combinations you can make with different meats and soups.  Best idea is to lightly brown the chops first with some seasonings though or else they can totally fall apart.  The browning/searing holds them together better for me.  

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Monica 2 years ago
Hi Heather! Thanks so much for responding to Charlotte. This isn't something I've ever tried, so I couldn't be any help at all. I appreciate your response!

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Becca 6 months ago
These turned out great!  I took them out of the fridge in the morning and they took 4 hours.  I have a new, oval-shaped crock pot and filled it a little more than half way.  Everyone loved them and they were so easy!  Thanks so much Monica!!!!

Reply
Monica 6 months ago
Hi Bec! How fun to hear from you. So glad your potatoes turned out well. Thanks for sharing the details of your crock pot, that it was half filled, and that it took 4 hours. All of those variables effect the cooking time, so that may help others gauge how long to allow their potatoes to cook. I also made these yesterday, and mine also were done in 4 hours. I did the overnight soak, too, to save on prep time in the morning. Hope you had a wonderful Thanksgiving. We missed you at the football game. :-)

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Thanks for showing all the steps. I love this idea.

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Nicole Lee 5 months ago
I made a vegan version of these and they were great! Thanks for sharing!

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Talia 5 months ago
Hi. I'm going to university in the fall and I got a small, 2-quart slow cooker for Christmas. I was wondering how the amounts would change? Thanks!

Reply



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