Loaded Mashed Potatoes Casserole

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This Loaded Mashed Potatoes Casserole is the perfect side dish! Rich, creamy, and loaded with crispy bacon, gooey cheese, and scallions.

casserole dish filled with loaded mashed potatoes

I have the perfect side dish for you!! We love loaded potato skins, but sometimes I don’t love how long they can take.

I feel this loaded potato casserole is a little easier than the traditional twice baked potatoes or potato skins because you don’t have to scoop out the pulp and try to keep the skin together. For some reason, I can’t seem to keep them together. Anyone else have that problem???

I realize this dish is pretty decadent and not so light on the calories but…….it’s not something you are going to eat every day.

It’s one of those, what I like to call, special occasion dishes, lol!

Looking for some more sides?? Try Lemon Parmesan Roasted Broccoli, Honey Garlic Roasted Carrots, or Skillet Garlic Green Beans.

Why You’ll Love This Loaded Potato Casserole

  • Easy & delicious
  • Great for potlucks and entertaining
  • Makes a large batch and is great for crowds
  • Simple prep & cleanup
  • Can be meal prepped
bowl with mashed potato casserole in it

Ingredients:

  • Russet or Yukon Gold potatoes
  • Cream cheese
  • Sour cream
  • Milk
  • Butter
  • Garlic Powder
  • Cheeses (Cheddar and Parmesan)
  • Bacon, of course!!
  • Green onions

Tell me you can’t read that ingredient list and NOT think this is going to be good!

How To Make Loaded Potato Casserole

Step 1: Cook the potatoes

Cook the potatoes, drain, and mash. Once mashed, add in cheese, sour cream, milk, and seasonings. Mash a little bit more, then stir in more cheese and bacon.

Step 2: Bake & Serve

Place the cheesy mashed potatoes in a casserole dish and bake. Top with some fresh green onions, serve, and enjoy!

serving a helping of cheesy mashed potatoes

Tips & Tricks

  • Skip bagged cheese and go for freshly grated cheese. The results are much creamier and it melts much better.
  • Cut the potatoes into small chunks that are uniform in size so they will cook evenly.
  • Mash the potatoes with a potato masher until they reach the desired texture. You can leave some chunks or make it super smooth depending on your preference.
  • Adjust the add-ins for some variety! You can exchange green onions for chives or swap out different flavors of cheese. Feel free to add extra cheese or bacon if you’d like!
dish with loaded mashed potatoes casserole

Can I double this mashed potato casserole recipe?

Yes, absolutely! You’ll need a larger pan or two 9×13 casserole dishes. If you use a larger pan you may need to add a little bit of extra baking time. Once the cheese is melted and it’s hot all the way through it is ready to serve.

How do you make loaded mashed potatoes ahead?

Simply make the loaded mashed potato casserole the night before, cover, and place it in the fridge. Just be sure to remove it from the refrigerator at least 30 minutes before baking it. And you will need to add on a little more baking time to make sure it’s heated through.

Can you freeze cheesy mashed potatoes?

Yes, simply skip step #2 and let the loaded mashed potatoes cool completely. Place in a freezer bag and freeze for up to 6 months. Thaw completely, then continue with step #2.

So as you can see this Loaded Mashed Potato Casserole is the Ultimate make-ahead dish and the best comfort food!

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Loaded Mashed Potatoes Casserole
Prep Time
30 mins
Cook Time
25 mins
Total Time
55 mins
 

This Loaded Mashed Potatoes Casserole is the perfect side dish! It's filled with bacon and cheese, and can easily be made ahead! 

Course: Side Dish
Cuisine: American
Keyword: cheesy potato casserole, Loaded potato casserole
Servings: 10
Calories: 579 kcal
Author: Malinda Linnebur
Ingredients
  • 4.5 pound (2kg) russet or Yukon gold potatoes, peeled and cut into small chunks
  • 1 cup (225g) sour cream
  • 6-8 ounces (225g) cream cheese, soft
  • ¾-1 cup (235ml) milk
  • 1-2 teaspoons garlic powder
  • salt and pepper to taste
  • cups (195g) shredded cheddar cheese
  • ¼ cup (30g) grated Parmesan cheese
  • 10-12 slices bacon, cooked and crumbled
  • 2 green onions, chopped
Instructions
  1. Place potatoes in a large pot and cover with water. Bring to a boil then reduce to a simmer and cook until potatoes are tender. Drain well. Add sour cream, cream cheese, milk, garlic powder, salt, and pepper. Mash until creamy. Stir in 1½ cups cheddar, Parmesan cheese, and ½ of the bacon. 

  2. Transfer to a lightly greased 9×13 baking pan. Sprinkle with remaining cheese and bacon. Bake uncovered at 350 degrees F for 25-30 minutes or until heated through and cheese is melted. Top with green onions before serving. 

Recipe Notes
  1. Make ahead option: Can make this the night before, cover, and refrigerate. Be sure to remove from the refrigerator at least 30 minutes before baking. May need to add on more baking time to completely heat the potatoes through. 
  2. Nutrition Facts: Since different brands of ingredients have different nutritional information, the information shown is just an estimate.
Nutrition Facts
Loaded Mashed Potatoes Casserole
Amount Per Serving
Calories 579 Calories from Fat 315
% Daily Value*
Fat 35g54%
Saturated Fat 20g125%
Cholesterol 107mg36%
Sodium 687mg30%
Potassium 1047mg30%
Carbohydrates 40g13%
Fiber 2g8%
Sugar 3g3%
Protein 26g52%
Vitamin A 1070IU21%
Vitamin C 12.3mg15%
Calcium 583mg58%
Iron 2.4mg13%
* Percent Daily Values are based on a 2000 calorie diet. Since different brands of ingredients have different nutritional information, the information shown is just an estimate.

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