Looking for a leftover mashed potato recipe? This Loaded Mashed Potato Bake casserole is the most delicious way to use up leftover mashed potatoes. It’s loaded with bacon, cheese and sour cream!

Thanksgiving is one of my favorite holidays, but with a gathering of just six people, we’re often stuck with quite a bit of leftovers after the big meal, especially when it comes to turkey and mashed potatoes. Even the smallest turkey feeds way more than six people, and for some reason, I find it impossible to make a small batch of mashed potatoes.

The question becomes, what to do with leftover mashed potatoes? While you can simply reheat leftover mashed potatoes, or even make mashed potato croquettes, my favorite way to serve leftover mashed potatoes a second time is this Loaded Mashed Potato Bake.

How long are leftover mashed potatoes good for in the fridge?

As long as they are refrigerated promptly (no more than 2 hours after serving), they will last about 3 or 4 days.

How do you reheat mashed potatoes?

My favorite way is to make baked mashed potatoes by simply placing them in a casserole dish, covering it with foil, and baking at 350 degrees F until they are completely heated through. And why not add some extra flavor before you reheat? That’s where this Loaded Mashed Potato Bake recipe comes in.

Tips for making this leftover mashed potato recipe successful

This recipe works great with leftover mashed potatoes, but you can also make it starting with fresh mashed potatoes (i.e. make mashed potatoes specifically in order to make this recipe). If using leftover mashed potatoes, the potatoes do need to be slightly warmed before stirring in the other ingredients. Cold mashed potatoes are very hard to stir and incorporate with the other ingredients.

These baked mashed potatoes are very adaptable to your family’s preferences and whatever ingredients you happen to have on hand. Omit the bacon for a vegetarian dish. Use chives instead of parsley. You can even use Parmesan cheese instead of cheddar!

What can you put in a leftover mashed potato recipe for flavor?

My favorite flavorings are the ones I’ve added to this leftover mashed potato recipe:

• sour cream
• garlic powder
• sharp cheddar cheese
• bacon
• green onion
• red onion
• parsley
• crushed cheese crackers on top!

Can I freeze this leftover mashed potato recipe?

If you make this recipe using leftover mashed potatoes, I do NOT advise freezing it and reheating it again. As a general rule of thumb for food safety, you only want to reheat leftovers once. Anything left over after that, you should discard. However, if you make this recipe using “fresh” mashed potatoes (mashed potatoes you made immediately before making this casserole), you can freeze it. Bake the frozen casserole straight from the freezer at 350 degrees F until the internal temperature of the casserole reaches at least 165 degrees F.

Yield: 4 servings

Loaded Mashed Potato Bake

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Looking for a leftover mashed potato recipe? This Loaded Mashed Potato Bake casserole is the most delicious way to use up leftovers. It's loaded with bacon, cheese and sour cream!

Prep Time 20 minutes

Cook Time 25 minutes

Total Time 45 minutes

Ingredients

• Nonstick cooking spray
• 1/4 cup coarsely crushed cheese crackers
• 1 tablespoon unsalted butter
• 2 cups 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

Instructions

1. Preheat oven to 350 degrees F. Spray small casserole dish with nonstick spray. In small bowl, combine crackers and butter.
2. If using leftover potatoes, heat them in microwave 1 minute to soften. Add sour cream, garlic powder and pepper; stir until well combined. Reserve 2 tablespoons each cheese and bacon. Add onions, parsley and remaining cheese and bacon to potatoes; stir until well combined.
3. Transfer mixture to prepared casserole dish and sprinkle with cracker mixture and reserved bacon and cheese. Bake 25 minutes or until heated through.

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Nutrition Information:

Yield:

4

Serving Size:

1
Amount Per Serving: Calories: 382 Total Fat: 26g Saturated Fat: 12g Trans Fat: 1g Unsaturated Fat: 10g Cholesterol: 59mg Sodium: 775mg Carbohydrates: 24g Fiber: 2g Sugar: 3g Protein: 14g

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• Aged Cheddar Mashed Potatoes – add a gourmet twist to a classic!
• Greek Mashed Potatoes – amazing with lamb or beef
• Parmesan Mashed Potatoes with Quick Sausage Ragu – a weeknight meal the family will love
• Chipotle-Maple Mashed Sweet Potatoes – the perfect balance of spicy and sweet
• Steakhouse Style Garlic Mashed Potatoes from The Stay At Home Chef
• Easy Crock Pot Mashed Potatoes from Yellow Bliss Road