Go Back
+ servings
leftover mashed potatoes recipe. Mashed Potato Casserole shown in cast iron pan topped with bacon, scallions and cheese.

Leftover Mashed Potato Recipe

Course: Side Dish
Cuisine: American
Keyword: leftover mashed potatoes recipe, loaded mashed potato casserole
Prep Time: 5 minutes
Cook Time: 15 minutes
Servings: 4 servings
Calories: 452kcal
Author: Colleen Kennedy
Need a recipe for leftover mashed potatoes? Try this Loaded Mashed Potato Casserole, a delicious leftover mashed potato recipe!
Print Recipe

Ingredients

  • 4 cups leftover mashed potatoes Yo u can use any amount of potatoes, recipe is very loose.
  • ½ cup sour cream more or less to taste
  • black pepper to taste if needed
  • kosher salt to taste if needed
  • 1 TBS Chopped parsley Optional
  • 7 slices crispy bacon
  • 1 cup shredded cheddar cheese
  • ¼ cup snipped scallions or chives

Instructions

  • In a bowl, combine mashed potatoes & sour cream stirring vigorously until fully incorporated.
  • Taste your potatoes, add some additional salt & pepper if needed for a full flavor.
  • Lightly coat a large non-stick or cast iron frying pan with grapeseed or olive oil (just enough to coat the surface of the pan, you don't want a puddle of oil).
  • Heat the pan over med-high heat for 1 minute, plop in the potatoes into sections and gently spread them across the surface of the pan without stirring the bottom around. Use a spatula to direct the potatoes across the pan.
  • Sprinkle the cheese, bacon, scallions and parsley over-top the mashed potatoes and allow them to heat through for about 10-12 minutes, turning the stove down to a medium heat after a few minutes. You can place a lid overtop to help the cheese melt.
  • A light crust will begin to form on the bottom of the potatoes. Just keep an eye on them since both pans and stoves vary. Reduce your heat to low if you feel the heat is too high.
  • Once the potatoes are heated through and the cheese melts, serve the potatoes on their own as a side dish or with kettle-style potato chips as an appetizer and enjoy.

Notes

Nutritional information will vary by your mashed potato ingredients. For the purpose of this calculation, the nutritional calculator used calculated it my "instant mashed potatoes" which is way off vs most homemade, especially when it comes to sodium.
Jazz your leftover mashed potatoes up any way you like. Put the cheese, bacon and scallions IN and ON the potato casserole or just overtop. You decide.
If baking, don't put scallions on until serving so they don't get charred or dried out. You can also scatter cooked bacon crumbles overtop as the cheese melts as you pull it from the oven so that the bacon doesn't overcook. 
Add as much cheese and bacon as your heart desires :)

Nutrition

Serving: 4servings | Calories: 452kcal | Carbohydrates: 51g | Protein: 17g | Fat: 20g | Saturated Fat: 10g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.02g | Cholesterol: 59mg | Sodium: 493mg | Potassium: 809mg | Fiber: 4g | Sugar: 3g | Vitamin A: 621IU | Vitamin C: 51mg | Calcium: 252mg | Iron: 1mg