Description

This cheesy Mashed Potato Casserole is a creamy, comforting side dish perfect for holidays and family gatherings. Made with tender russet or Yukon gold potatoes, cream cheese, sour cream, and a blend of cheddar cheese, it’s baked to golden perfection with optional bacon and green onions for added flavor and texture. Easy to prepare and can be made ahead, this casserole is sure to be a crowd-pleaser.

Ingredients

Scale

Potatoes

3 lbs russet or Yukon gold potatoes (peeled and cut into chunks)

Mix-ins

4 oz cream cheese (softened)
½ cup sour cream
½ cup whole milk (warmed)
4 tablespoons unsalted butter
1 teaspoon garlic powder
1 teaspoon salt
½ teaspoon black pepper
1 ½ cups shredded cheddar cheese (divided)
½ cup chopped green onions or chives (optional)
6 strips cooked bacon (crumbled, optional)

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Instructions

Preheat Oven: Preheat your oven to 375°F to get it ready for baking the casserole later.
Cook Potatoes: Place the peeled and chopped potatoes in a large pot, cover with cold water, add a generous pinch of salt, then bring to a boil. Cook for 15–20 minutes until potatoes are fork-tender.
Drain and Mash: Drain the potatoes well and return them to the pot. Add cream cheese, sour cream, warmed milk, butter, garlic powder, salt, and pepper. Mash until the mixture is smooth and creamy.
Mix Cheese and Onions: Stir in 1 cup of shredded cheddar cheese and half of the green onions or chives if you are using them.
Assemble Casserole: Spread the mashed potatoes evenly into a greased 9×13-inch baking dish.
Add Toppings: Sprinkle the remaining ½ cup of cheddar cheese over the top and add crumbled bacon if desired.
Bake: Bake uncovered for 20–25 minutes, or until the cheese is melted and the casserole is heated through.
Garnish and Serve: Garnish with the remaining green onions before serving for a fresh finish.

Notes

This casserole can be prepared up to 2 days in advance and refrigerated before baking.
For a crunchy topping, sprinkle buttered breadcrumbs over the casserole before baking.
Swap cheddar cheese for Monterey Jack or Gruyère to change the flavor profile.

Prep Time: 25 minutes
Cook Time: 25 minutes
Category: Side Dish
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 cup
Calories: 320
Sugar: 2g
Sodium: 450mg
Fat: 18g
Saturated Fat: 11g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 30g
Fiber: 2g
Protein: 8g
Cholesterol: 45mg