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Leftover Mashed Potato Soup
why make this recipe
Leftover Mashed Potato Soup is a fantastic way to use up those extra mashed potatoes from your holiday meals or family dinners. Instead of throwing them away or reheating them day after day, you can transform them into a creamy, comforting soup. This recipe is not only simple but also makes for a delicious and hearty dish that’s perfect for a cozy weeknight dinner.

how to make Leftover Mashed Potato Soup
Ingredients:
- 2 cups leftover mashed potatoes
- 2 cups chicken or vegetable broth
- 1 cup milk or cream (depending on your preference)
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 tablespoon olive oil or butter
- Salt and pepper to taste
- Optional toppings: chives, shredded cheese, bacon bits, or sour cream
Directions:
- In a large pot, heat the olive oil or butter over medium heat.
- Add the diced onion and minced garlic. Sauté until the onion is soft and translucent, about 5 minutes.
- Stir in the leftover mashed potatoes, mixing well with the onion and garlic.
- Gradually add the broth, stirring until the mixture is smooth and creamy.
- Pour in the milk or cream, and continue to stir. Let the soup simmer for about 10 minutes, allowing it to heat through.
- Taste and season with salt and pepper according to your preference.
- If you prefer a smoother texture, you can blend the soup with an immersion blender or in a standard blender until creamy.
- Serve hot, garnished with your choice of toppings.
how to serve Leftover Mashed Potato Soup
Serve this soup warm in bowls. You can add a sprinkle of chives, shredded cheese, bacon bits, or a dollop of sour cream on top for an extra touch. Pair it with some crusty bread or a side salad to make a complete meal.
how to store Leftover Mashed Potato Soup
If you have any leftovers, store the soup in an airtight container in the refrigerator. It can last for about 3-4 days. To reheat, simply warm it in a saucepan on the stove or in the microwave until heated through. You may need to add a splash of broth or milk to loosen it up.
tips to make Leftover Mashed Potato Soup
- Use rich, creamy mashed potatoes for a thicker soup.
- Customize the soup by adding vegetables like carrots or celery for more flavor and nutrients.
- For a spicy kick, consider adding a pinch of cayenne pepper or some diced jalapeños.
variation
You can make a loaded version of this soup by adding cooked bacon, cheese, and green onions into the mixture. Another variation is to use different types of broth, such as beef broth, for a different flavor profile.
FAQs
Can I freeze Leftover Mashed Potato Soup?
Yes, you can freeze it! Store it in airtight containers or freezer bags. It can last up to 3 months in the freezer.
What if I don’t have enough mashed potatoes?
You can combine the mashed potatoes with cooked cauliflower or other vegetables to achieve the needed volume.
Can I use instant mashed potatoes?
Yes, but the texture and flavor will be different. If you choose to use instant mashed potatoes, make sure to follow the package instructions for the best results.

Leftover Mashed Potato Soup
Ingredients
For the Soup
- 2 cups leftover mashed potatoes
- 2 cups chicken or vegetable broth
- 1 cup milk or cream Depending on your preference
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 tablespoon olive oil or butter
- Salt and pepper to taste
- Optional toppings: chives, shredded cheese, bacon bits, or sour cream
Instructions
Preparation
- In a large pot, heat the olive oil or butter over medium heat.
- Add the diced onion and minced garlic. Sauté until the onion is soft and translucent, about 5 minutes.
- Stir in the leftover mashed potatoes, mixing well with the onion and garlic.
- Gradually add the broth, stirring until the mixture is smooth and creamy.
- Pour in the milk or cream, and continue to stir. Let the soup simmer for about 10 minutes, allowing it to heat through.
- Taste and season with salt and pepper according to your preference.
- If you prefer a smoother texture, you can blend the soup with an immersion blender or in a standard blender until creamy.
- Serve hot, garnished with your choice of toppings.