Ask Dr. Potato

With 928 posts, chances are there's already an answer to your question. Please try searching below before submitting a question to Dr. Potato. Use multiple words to help narrow down the results. For example, search for "potatoes" and "group" if looking for an answer on cooking potatoes for large groups.

Back To Dr. Potato Home

What to do With the Leftover Mashed Potatoes


At my restaurant we serve a lot of entrees with a side of Idaho® mashed potatoes and while I love how popular this is with our customers, we often end up with extra.  I would like to use these up before making a new batch…any suggestions on what else I can do with them?


Left over mashed potatoes can make a mean potato gnocchi, that’s one of my favorite ways to mix it up with extended uses for mashed potatoes. The question you asked has been a part of some of the American Culinary Federation workshops we did last year, which led to reports like "Repurposing Leftover Idaho Potatoes Boosts Creativity and Profitability."

Locally in Idaho, Chef David Knickrehm (previously Executive Chef CEC at Bella Aquila) made several recipes with leftover Idaho mashed potatoes, such as Horseradish Gnocchi. As an added bonus, here is a recipe he has for using left over Baked potatoes:

Idaho® Potato Salad
Yield: 19 5-oz. servings.

  • 20 leftover baked Idaho® potatoes
  • 5 stalks celery, diced
  • 8 eggs, hard-boiled, peeled and chopped
  • to taste, salt and pepper
  • ⅓ cup minced garlic
  • 7 cups tartar sauce
  • 1½  cups brown sugar
  • 1 cup Dijon mustard
  • 1½ cups stone-ground mustard
  • ¼ cup liquid smoke
  • 1 bunch scallions

Dice potatoes. Combine all ingredients. Allow to sit refrigerated overnight to allow flavors to mingle.