Bowl of creamy mashed potatoes with a wooden spoon, placed on a rustic table with fresh vegetables and a red cloth, capturing a cozy outdoor dining experience.
Food Waste Free Recipes

Leftover Mashed Potato Soup

Pass the potatoes, please! While we all love mashed potatoes, that smooth, buttery consistency is never the same the next day (no matter how hard you try). So why not turn this holiday staple into a whole new dish? This Leftover Mashed Potato Soup combines those tired potatoes with fresh veggies to make a light but creamy soup that will make your taste buds and those leftover spuds happy.

The Salt:
The grains in Morton® Fine Sea Salt quickly dissolve in the warm broth and evenly spread flavor throughout the soup to ensure each spoonful is as tasty as the one before.
Jump To:
Ingredients Instructions

Key Information

Time

Prep: 35 minutes

Serves

About 1 quart, 4 (1-cup) servings

Ingredient List

Ingredients and measurements.

  • 2 tablespoons extra-virgin olive oil
  • 2 stalks celery, diced
  • 1 medium yellow onion, diced
  • 1 medium carrot or parsnip, diced
  • ¼ teaspoon Morton® Fine Sea Salt
  • 2 cups leftover mashed potatoes
  • 2 cups unsalted chicken or vegetable broth (or water)
  • ⅛ teaspoon ground black pepper
  • 1 tablespoon chopped fresh chives, divided (for garnish, optional)

Cooking Instructions

Step-By-Step Cooking Information and Guidance

Step 1

Heat the olive oil in a medium saucepan over medium-low heat.

Step 2

Add the celery, onion and carrot (or parsnip).

Step 3

Season with ¼ teaspoon Morton® Fine Sea Salt. Cook, stirring frequently, for about 10 minutes, until vegetables are soft.

Step 4

Whisk in the leftover mashed potatoes, broth (or water) and black pepper.

Step 5

Bring to boil over high heat.

Step 6

Reduce heat to low and simmer for about 10 minutes.

Step 7

Ladle soup into bowls and garnish with chives, if using.

Morton Products USED IN THIS RECIPE

Our products that bring this dish together
sea-salt-fine

Fine Sea Salt Fine 17.6 oz

Fine sea salt created by sea water that has been evaporated by the sun.   Morton Fine Sea Salt is the perfect salt for marinades, soups and dressings. This quick-dissolving, evenly-blending salt is an excellent choice for cooking. Take your baking to the next level and bring out the flavor of your cookies, cakes and pies – or try out a new salted caramel recipe. At Morton Salt, we make sure only the best salt crystals reach your plate, so every dish you create will be as flavorful as you intend. 

View Product
Morton Salt
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognizing you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.