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Fast Mashed Potato Soup

You won't recognize the leftover mashed potatoes in this excellent tasting soup from Dorothy Bateman of Carver, Massachusetts. "Topped with chives, it's especially good on chilly fall evenings, she notes.
  • Total Time
    Prep/Total Time: 15 min.
  • Makes
    3 servings


  • 1 tablespoon chopped onion
  • 1 tablespoon butter
  • 2 cups milk
  • 1-1/2 cups mashed potatoes (prepared with milk and butter)
  • 1/2 teaspoon salt, optional
  • 1/8 teaspoon celery salt, optional
  • 1/8 teaspoon pepper
  • 1 tablespoon minced chives


  • In a saucepan, saute =onion in butter until tender. Add the milk, potatoes, salt and celery salt if desired and pepper; heat through.
  • Sprinkle with chives.
Nutrition Facts
3/4 cup: 192 calories, 6g fat (0 saturated fat), 5mg cholesterol, 401mg sodium, 28g carbohydrate (0 sugars, 0 fiber), 8g protein. Diabetic Exchanges: 1 starch, 1 fat-free milk, 1 fat.

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  • Pat
    May 18, 2020

    I really love this recipe. I substituded 2 cups of chicken broth and added 2 small baked potatoes cubed and added turkey bacon bits. It was awesome and. I will make it again.

  • Sara
    Mar 5, 2020

    I just happened to have 1 1/2 cups of leftover mashed potatoes! Made it in a jiffy and It was delicious!!?? I did substitute organic chicken broth for the milk, as I am dairy intolerant and I used some just rendered bacon drippings instead of butter. I gobbled up two bowls in one sitting.Excellent remedy for a cold rainy night in Georgia. Will definitely be making this often.

  • Potroast911
    Sep 19, 2012

    This was my favorite recipe in a book I got back in junior high. I'd lost the book in a move years back and have been looking for it ever since. Thanks Taste of Home for reuniting us. ;)

  • ginger66
    Oct 21, 2010

    I actually made this recipe with instant mashed potatoes and dried minced onion. I added a handful of mixed frozen veggies and some leftover bacon, crumbled. So easy ad a really yummy recipe.

  • alwaysmnm
    Nov 25, 2009

    Excellent use for leftover mashed potatoes! And, I always have all the other ingredients on hand. Don't let its looks fool you while it's cooking. It looked really thin, and I was afraid it was going to taste like warm milk, but it was delicious. I made it with leftover scallion mashed potatoes, put croutons on top, and served it with a salad. It was the perfect cool weather weekend lunch.

  • Kris Countryman
    Aug 15, 2009

    I actually skipped the butter and used instant minced onion. This soup was so easy and good. The pepper gave it a little bite.