This post may contain affiliate links. If you make a purchase through links on our site, we may earn a commission.

Simple and effective methods on How to Thicken Mashed Potatoes so you do not ruin your homemade mashed potatoes. These are our preferred methods to get dinner on the table quickly.

Close up image of a bowl of mashed potatoes.
Want to save this?
Just enter your email and I’ll send it right to you, plus great new recipes weekly!

My family loves having mashed potatoes as a Side Dish. But what ruins a good bowl of mashed potatoes is when it is to thin. These methods are perfect for when you are trying to get dinner on the table but don’t want to comprise the taste of your potatoes.

The only thing that these do is thicken your soupy mashed potatoes. Some of these methods don’t even require additional ingredients. Therefore, anyone can do it with very little effort.

Use a Thickening Agent

One way to thicken your mashed potatoes is with a thickening agent. You can use either cornstarch, flour, or powdered milk. Our preferred choice is cornstarch as it doesn’t change the taste of the potatoes. Flour can make the potatoes have a chalky taste.

Just add cornstarch or flour one tablespoon at a time until you reach your desired consistency.

Add Dehydrated Potatoes

If you have dehydrated potatoes, add in about a tablespoon to your mashed potatoes until your desired consistency. This is a great option as it really gives your potatoes a smooth consistency and it is a great thickening power.

Close up image of a bowl of mashed potatoes.

Heat on the Stove Top

The perfect option if you do not want to add any additional ingredients is to heat on the stove top. Place your mashed potatoes in a pan on the stove. Cook on medium low heat. Leave uncovered and stir about every minute so potatoes do not stick to the bottom and until your mashed potatoes thicken.

Bake in a Shallow Dish

Another option that is great if you have the time, is to place your mashed potatoes in a baking dish and bake at 350 degrees uncovered in the oven to remove excess moisture. Let them cook for about 10 to 15 minutes until you reach you desired consistency.

Close up image of a bowl of mashed potatoes.

Heat in the Microwave

If you have a small amount of potatoes that you are trying to thicken, try putting the potatoes in the microwave in a microwave safe bowl. Heat the runny potatoes up for 1-2 minutes then take out of the microwave and stir.

Continue doing so until your desired thickness.

Add additional cooked potatoes

If you have additional potatoes, cook them until they have reached super soft. Then mash them a little and then add them to your bowl of potatoes. Keep adding cooked potatoes until your mashed potatoes have thickened up.

Add Parmesan Cheese

Cheese can be added to your potatoes to thicken them up. This of course changes the flavor of the potatoes but it really does enhance the taste. Parmesan cheese is one of my favorite ways to thicken them up and it taste great too.

Use your cheese grater and add in some cheese.

Try one of our Mashed Potato Recipes

1. Best Mashed Potatoes

bowl of mashed potatoes
Best Mashed Potatoes
These homemade mashed potatoes are creamy and delicious. With just a few easy steps, your family can enjoy mashed potatoes from scratch.
Best Mashed Potatoes

2. Ranch Mashed Potatoes

A bowl of creamy Ranch Mashed Potatoes topped with melted butter and sprinkled with chopped parsley, placed on a textured light-colored cloth.
Ranch Mashed Potatoes
These delicious Ranch Mashed Potatoes are perfect for any homemade meal! These potatoes are creamy and packed with tons of flavor.
Ranch Mashed Potatoes

3. Garlic Mashed Potatoes

A bowl of creamy Garlic Mashed Potatoes topped with a swirl of melted butter and sprinkled with herbs, placed on a woven placemat.
Garlic Mashed Potatoes Recipe
Garlic mashed potatoes are creamy and delicious. Jazz up plain potatoes with garlic for the best side dish.
Garlic Mashed Potatoes Recipe

4. Crock Pot Mashed Potatoes

A bowl of creamy crock pot mashed potatoes topped with a pat of melting butter and sprinkled with chopped chives, placed on a light-colored surface next to fresh chives and a small dish of extra chives.
Crock Pot Mashed Potatoes Recipe
Make Crock Pot Mashed Potatoes Recipe to feed a crowd. This easy way to make mashed potatoes is perfect for holiday cooking and so delicious and creamy.
Crock Pot Mashed Potatoes Recipe

5. Cheesy Mashed Potatoes

A square white baking dish filled with Cheesy Mashed Potatoes, topped with melted cheddar cheese and chopped chives, sits on a light surface next to a checkered towel, parsley, and a spoon.
Cheesy Mashed Potatoes
Cheesy mashed potatoes are loaded with cream cheese and cheddar cheese for a great side dish. They are baked to perfection.
Cheesy Mashed Potatoes

6. Instant Pot Mashed Potatoes

A pot of creamy Instant Pot Mashed Potatoes topped with butter and chopped chives, surrounded by fresh potatoes, herbs, a wooden spoon, and a checkered kitchen towel on a white surface.
Instant Pot Mashed Potatoes
Looking for electric pressure cooker recipes? This instant pot mashed potatoes recipe is the best. Pressure cooker mashed potatoes is the only way to go.
Instant Pot Mashed Potatoes

More Kitchen Tips to Try

If any of these tips help, please let us know which one you tried! We love hearing from you.

A bowl of the best mashed potatoes, creamy and smooth, topped with melted butter, cracked black pepper, and chopped parsley.

How to Thicken Mashed Potatoes

5 from 1 vote
Save your mashed potatoes with these simple methods on How to Thicken Mashed Potatoes. Quick and easy tricks to save your mashed potatoes.
Prep Time 5 minutes
Total Time 2 minutes
Servings 1
Cuisine American
Course Side Dish
Calories 243

Ingredients

  • 1 cup Mashed Potatoes
  • 1 Tablespoon Cornstarch, Flour or Powdered Milk
Want to save this?
Just enter your email and I’ll send it right to you, plus great new recipes weekly.

Instructions

  • Slowly add cornstarch, flour or powdered milk to your runny mashed potatoes, 1 tablespoon at a time
  • Stir the potatoes together. And add another tablespoon until they have thickened to your desired thickness.

Recipe Notes

I prefer to thicken with cornstarch as it does not affect the flavor of the mashed potatoes.  
How to Avoid Runny Mashed Potatoes
  • Using the right kind of potatoes. Yukon Gold Potatoes is the preferred potatoes but you can also use russet potatoes.
  • Don’t over cook the potatoes. Once you can pierce the potatoes with a fork they are done.
  • When adding liquid gradually add it. This ensure that you don’t add to much.

Nutrition Facts

Serving 1g, Calories 243kcal, Carbohydrates 56g, Protein 5g, Fat 0.3g, Saturated Fat 0.1g, Polyunsaturated Fat 0.1g, Monounsaturated Fat 0.01g, Sodium 63mg, Potassium 659mg, Fiber 4g, Sugar 2g, Vitamin A 7IU, Vitamin C 49mg, Calcium 16mg, Iron 1mg

Pin This Now to Remember It Later

Pin Recipe
Want to save this?
Just enter your email and I’ll send it right to you, plus great new recipes weekly.

Try these other recipes

Share this recipe!

PinYummly

About the Author

Hi, I’m Carrie Barnard — a professional food blogger with over 14 years of experience helping busy families make dinner fast, easy, and affordable.

At Eating on a Dime, I share simple, budget-friendly recipes that are tested in my own kitchen and approved by my 8 kids. With millions of readers each month, I’m here to help you cook real food for real families — without the stress.

5 from 1 vote (1 rating without comment)

Leave A Review

Your email address will not be published. Required fields are marked *

Recipe Rating