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Mashed Potato Soup

This Mashed Potato Soup is a perfect way to use up leftover mashed potatoes! A hearty and easy dinner or lunch that the whole family will love!

A TASTY POTATO SOUP RECIPE

My family always jokes that I make enough mashed potatoes to feed a whole platoon – ha! So I try to figure out ways to use up the leftovers and this soup became one of my favorites. With other easy and flavorful ingredients, this is a perfect weeknight soup recipe that will both warm and fill you up. No need to throw away those leftovers, use them in this Mashed Potato Soup recipe and have yourself a whole new meal!

Overhead photo of Mashed Potato Soup in handled bowl topped with cheese, bacon and green onions.

FREQUENTLY ASKED QUESTIONS:

What potatoes are best to use?

This is great for those leftover mashed potatoes you made for the holidays. Any type of mashed potatoes made with russet, Yukon or red skinned potatoes will work. You can also use packaged mashed potatoes and prepare them and use them as well!

How do I make this thicker or thinner?

This recipe is a nice balance between thick and thin. But as you make it and find that you want it thicker, just add more mashed potatoes. If you want it thinner then add some more of the chicken broth or milk and stir until you get your desired consistency.

Can I add anything to this to make it more flavorful?

If you want even more depth of flavor on this already flavorful soup, you can add in onions, garlic and any additional seasonings as you see fit.

What can I serve this with?

While this is great served on its own, some options include: leftover turkey sandwiches, ham sandwiches, side salad, bread, etc.

What toppings are best on this soup?

This is really a personal preference but we love to add more shredded cheese, cooked bacon and some green onions.

How do I store leftovers?

This can be stored in the refrigerator in an airtight container where it will keep for up to 4 days. It can also be frozen. Place in a freezer-safe container put in the freezer where it will keep for up to 3 months. The potatoes will lose some of their creaminess and texture so freeze with caution. To defrost, remove to the refrigerator overnight until thawed. Reheat on the stovetop until heated through.

White bowl full of Mashed Potato Soup garnished with spoon in bowl, Pinterest image.

INGREDIENTS NEEDED: (FULL RECIPE AT THE BOTTOM OF THE POST)

  • unsalted butter
  • all-purpose flour
  • salt and pepper
  • chicken broth
  • whole milk
  • prepared mashed potatoes
  • cheddar cheese
  • optional: cheddar cheese, bacon, green onion/chives, sour cream for serving
Ingredients needed:

HOW TO MAKE MASHED POTATO SOUP:

In a large pot, melt the butter over medium heat and add the flour, salt and pepper. Use a whisk to mix everything together and cook for 1 minute. 

Slowly pour the chicken broth into the pan, whisking constantly.

Add the milk, mashed potatoes and cheddar cheese.

Cook for 5 minutes stirring constantly just until the soup reaches a simmer. Continue cooking until desired thickness is reached. Serve with optional toppings.

We like to top with shredded cheddar cheese, cooked bacon and sliced green onions.

Mashed Potato Soup in white handled bowl with spoon in bowl garnished with toppings.

WANT MORE DELICIOUS RECIPES?

Close up photo of Mashed Potato Soup in bowl with garnishes with spoon slightly pulling out of bowl.

Mashed Potato Soup

This Mashed Potato Soup is a perfect way to use up leftover mashed potatoes! A hearty and easy dinner or lunch that the whole family will love!
5 from 13 votes
Print Pin Rate
Prep Time: 5 minutes
Cook Time: 5 minutes
Total Time: 10 minutes
Servings: 8

Ingredients

Instructions

  • In a large pot, melt the butter over medium heat and add the flour, salt and pepper.
  • Use a whisk to mix everything together and cook for 1 minute.
  • Slowly pour the chicken broth into the pan, whisking constantly.
  • Add the milk, mashed potatoes and cheddar cheese.
  • Cook for 5 minutes stirring constantly just until the soup reaches a simmer.
  • Continue cooking until desired thickness is reached.
  • Serve with optional toppings.

Notes

  • Other additions can be added into the soup, see above.
  • Any leftover potatoes will work or you can use packaged potatoes and make them.
Course: Main Course, Soup
Cuisine: American

Nutrition

Calories: 257kcal | Carbohydrates: 37g | Protein: 8g | Fat: 9g | Sodium: 894mg | Fiber: 3g | Sugar: 4g

Nutritional Disclaimer

“The Country Cook” is not a dietician or nutritionist, and any nutritional information shared is an estimate. If calorie count and other nutritional values are important to you, we recommend running the ingredients through whichever online nutritional calculator you prefer. Calories and other nutritional values can vary quite a bit depending on which brands were used.

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