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leftover mashed potato

Leftover Mashed Potato Recipe 3 Top Easy to Make Recipes

by Helen
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Top 3 Favorite Leftover Mashed Potato Recipe Ideas

Recipes using leftover mashed potatoes are easy to pull off.  Usually, when we make real mashed potatoes, we always seem to have leftovers.  Below we have listed a few of our favorite leftover mashed potato recipes.   These leftover mashed potato recipes are easy to make, and you probably already have all the ingredients in your kitchen.  Also, what do you do with slow cooker leftover mashed potatoes?  Additionally, if you like pork chops, try our pork chops with caramelized apples or classic braised beef stew recipes.  We do not like to waste food; therefore, we use what we have on hand when preparing meals. You can make quick meals with real food from mashed potatoes and organic produce. Plus, most work is done using leftover mashed potatoes or other foods.  For a low carbohydrate mashed potato dish alternative, try making cauliflower mash.

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How Long Are Mashed Potatoes Good For?

The short answer is 3-5 days.  When mashed potatoes are stored in the refrigerator in an airtight container, they can last 3-5 days.  Although, if your recipe calls for dairy products such as butter, milk, cream cheese, or sour cream, that may cause your potatoes to go bad quicker than plain potatoes.

How To Work With Leftover Mashed Potato?

Cold left over mashed potatoes can be safely reheated to their original hot, creamy and smooth. To rewarm your leftover mashed potatoes, add milk a little at a time and a bit of butter this will preserve their creamy texture.  It would be best if you warmed them slightly when using leftover mashed potatoes on a new dish.  Otherwise, they will be hard to stir and work with other ingredients.  When making these dishes, you can adapt them to your family's preference and use any ingredients you have on hand. For example, you can substitute one cheese for another.  

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Leftover Mashed Potato Recipe - Meal #1: Leftover Mashed Potato Shepherd’s Pie

Sheppards Pie
Dry Aged Ground Beef - $9.00

Our Ground Beef is unlike any you‰Ûªve ever tasted. We dry age our beef whole for a minimum of 14 days to give every item, including Ground Beef, the intensely beefy flavor typically associated with high-end steakhouses. All of our beef are 100% pasture-raised with no antibiotics and no added hormones.

One of our favorite and pretty popular dishes is Shepherd's Pie. Also, one of the most popular potato casseroles is Shepherd’s Pie. Furthermore, it is an easy way to use your leftover mashed potatoes.  We use organic and free-range, grass-fed and heritage-pork in our recipes; curious about natural and organic online meat delivery read our review on Good Chop Grass-Fed Meat Delivery services.


For the meat filling:

  • 2 tablespoons canola oil
  • 1 cup chopped onion
  • 2 carrots, peeled and diced small
  • 2 cloves garlic, minced
  • 1 1/2 pounds of ground turkey, or ground beef, or ground pork
  • 1 teaspoon kosher salt
  • 1/2 teaspoon freshly ground black pepper
  • 2 tablespoons all-purpose flour
  • 2 teaspoons tomato paste
  • 1 cup chicken broth
  • 1 teaspoon Worcestershire sauce
  • 2 teaspoons freshly chopped rosemary leaves
  • 1 teaspoon freshly chopped thyme leaves
  • 1/2 cup fresh or frozen corn kernels
  • 1/2 cup fresh or frozen English peas
  • Leftover Mashed Potatoes


  1. Preheat the oven to 400 degrees F.
  2. Place the canola oil into a 12-inch saute pan and set over medium high heat. Once the oil shimmers, add the onion and carrots and saute just until they begin to take on color, approximately 3 to 4 minutes.
  3. Add the garlic and stir to combine. Add the ground beef, salt and pepper and cook until browned and cooked through, approximately 3 minutes. Sprinkle the meat with the flour and toss to coat, continuing to cook for another minute. Add the tomato paste, chicken broth, Worcestershire, rosemary, thyme, and stir to combine. Bring to a boil, reduce the heat to low, cover and simmer slowly 10 to 12 minutes or until the sauce is thickened slightly.
  4. Add the corn and peas to the ground beef mixture and spread evenly into an 11 by 7-inch glass baking dish. Top with the mashed potatoes, starting around the edges to create a seal to prevent the mixture from bubbling up and smooth with a rubber spatula. Place on a parchment lined half sheet pan on the middle rack of the oven and bake for 25 minutes or just until the potatoes begin to brown. Remove to a cooling rack for at least 15 minutes before serving.


Tips For Making Your Loaded Leftover Mashed Potato Cakes

Recipes using leftover mashed potatoes for any day of the week.  These Leftover Mashed Potato Cakes make an amazing side dish or light dinner or lunch! These are the perfect way to enjoy leftover potatoes and the flavor combinations are endless!  Also, you can serve your meal with Greens and Brussels Sprout Salad with Homemade Salad Dressing.

You can really get creative with the seasonings and add ins in this easy recipe!  Pretty much anything in your fridge is game… add some spices & herbs, a little bit of meat/protein and whatever veggies you have on hand!

A few of our favorite combos include:

  • ham, cheddar, red bell pepper, squeeze of dijon
  • leftover taco meat, corn, cheese
  • pepperoni, oregano, green pepper, mozzarella
  • leftover chicken/turkey, poultry seasoning, leftover stuffing
  • sundried tomatoes, oregano & basil, fresh mozzarella
  • anything in your fridge 

They can be topped with sour cream, extra bacon bits, sautéed veggies, ketchup, sausage and eggs, basically anything you might have handy!

Loaded Leftover Mashed Potatoes Patties Recipe: Meal # 2

Loaded Mashed Potato Recipe Breakfast Patties


  • 2 cups cold leftover mashed potatoes
  • 1 cup shredded cheese, such as cheddar
  • 1/2 cup flour
  • 6 strips of bacon
  • 1 medium chopped onion (or 1/4 cup green onion)
  • 2 cloves garlic chopped
  • 1 tsp salt
  • 1/2 tsp pepper
  • 2 tbsp fresh basil chopped
  • 2 tbsp fresh parsley chopped
  • 2 eggs
  • 4 tbsp butter or margarine


  1. Fry the bacon until crispy and drain on a paper towel until cool. Crumble into small bits. Place the bacon bits into a large bowl.
  2. Pour off all but 2 tbsp of bacon grease from the frying pan and cook the garlic and white onion if using, over medium heat until translucent. (If using green onion, no need to precook).
  3. Add to the bacon bits along with the remaining ingredients (except butter/margarine) and blend well with a spoon or your hands (it’ll be sticky).
  4. Wash and dry your frying pan, then melt 1 tbsp of butter or margarine in it over medium heat.
  5. Scoop up about 1/4 of a cup of the potato mixture and form it into a ball. Place it in the hot pan, flattening it out until it’s about 1/2 – 3/4″ thick.
  6. Fry for about 3 minutes on each side until they are lightly golden brown.
  7. For best results, serve immediately while hot and crispy.
  8. Top with green onions, sour cream, or ketchup.

Recipe Notes

*Depending on the consistency of your leftover mashed potatoes, you may need a little bit less flour (or a little bit more). You want the cakes to stick together (and not be too sticky). 

Leftover Mashed Potato Recipe - Meal # 3: Leftover Mashed Potatoes Casserole

leftover mashed potato


  • Nonstick cooking spray
  • 1/4 cup coarsely crushed cheese crackers
  • 1 tablespoon unsalted butter, softened
  • 2 cups leftover mashed potatoes 
  • 1/3 cup sour cream
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon ground black pepper
  • 4 ounces shredded sharp cheddar cheese
  • 4 slices cooked bacon, crumbled
  • 1 green onion, thinly sliced
  • 1/4 cup finely chopped red onion
  • 1 tablespoon chopped fresh parsley


  1. Preheat oven to 350 degrees F. Spray a medium casserole dish with nonstick spray. In a small bowl, stir crackers and butter until well combined.
  2. If leftover potatoes are cool, place them in a medium microwave-safe bowl and microwave 1 minute to soften. Add sour cream, garlic powder, and pepper to potatoes; stir until well combined.
  3. Reserve 2 tablespoons each of cheese and bacon. Add onions, parsley, and remaining cheese and bacon to potatoes; stir until well combined. ( you can substitute the bacon for a different protein)
  4. Transfer mixture to a prepared casserole dish and sprinkle with cracker mixture and reserved bacon and cheese. Bake for 25 minutes or until heated through.
These are just a few ideas of what to do with leftover mashed potato.  Finally, you can also make leftover mashed potato tacos.  Yum!
***Use Organic Produce When Possible

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