Three Cheese Mashed Potato Casserole

Elevate your comfort food game with this indulgent Three Cheese Mashed Potato Casserole, a creamy, cheesy masterpiece that’s perfect for family dinners, holidays, or potlucks. Made with fluffy mashed Russet potatoes infused with tangy cream cheese, rich sour cream, and a trio of melted cheeses—cheddar, mozzarella, and Parmesan—this dish takes mashed potatoes to a whole new level. Topped with bubbling golden cheese for the ultimate crust, every bite is a harmony of creamy and savory flavors. With simple ingredients and easy-to-follow steps, this casserole is a crowd-pleaser that pairs wonderfully with roasted meats or vegetables. It’s a must-try side dish that promises maximum flavor with minimal effort!

Nutriscore Rating: 64/100

Prep Time:20 mins

Cook Time:40 mins

Total Time:60 mins

Servings: 8

Ingredients

• 4 pounds Russet potatoes
• 2 teaspoons Salt
• 6 tablespoons Unsalted butter
• 8 ounces Cream cheese, softened
• 1 cup Sour cream
• 0.5 cups Milk
• 1 cup Shredded cheddar cheese
• 1 cup Shredded mozzarella cheese
• 0.5 cups Grated Parmesan cheese
• 0.5 teaspoons Ground black pepper
• 0.5 teaspoons Garlic powder
• 2 tablespoons Chopped fresh parsley (optional, for garnish)
• 1 spray Non-stick cooking spray

Directions

Step 1

Peel and cut the potatoes into large chunks. Place them in a large pot and cover with cold water. Add 1 teaspoon of salt to the water.

Step 2

Bring the pot to a boil over medium-high heat, then reduce the heat and simmer for 15-20 minutes, or until the potatoes are fork-tender.

Step 3

Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish with non-stick cooking spray.

Step 4

Drain the potatoes and return them to the pot. Mash the potatoes until smooth using a potato masher, or pass them through a ricer for extra creaminess.

Step 5

Add the butter, cream cheese, sour cream, and milk to the mashed potatoes. Stir until fully combined and creamy.

Step 6

Mix in 1/2 cup of the shredded cheddar cheese, 1/2 cup of the shredded mozzarella cheese, and 1/4 cup of the grated Parmesan cheese. Season with the remaining 1 teaspoon of salt, black pepper, and garlic powder.

Step 7

Transfer the mashed potato mixture to the prepared baking dish, spreading it out evenly.

Step 8

Sprinkle the remaining cheddar, mozzarella, and Parmesan cheeses evenly over the top of the casserole.

Step 9

Bake in the preheated oven for 20-25 minutes, or until the casserole is heated through and the cheese on top is melted and bubbly.

Step 10

If desired, turn on the broiler for 2-3 minutes to achieve a golden-brown top. Watch closely to avoid burning.

Step 11

Remove the casserole from the oven and let it sit for 5 minutes before serving.

Step 12

Garnish with chopped fresh parsley, if desired, before serving.

Nutrition Facts

Serving size	(2759.3g)

Amount per serving	% Daily Value*
Calories	4676.5

Total Fat 272.7g	0%
Saturated Fat 168.2g	0%
Polyunsaturated Fat 0.1g
Cholesterol 804.5mg	0%
Sodium 8097.4mg	0%
Total Carbohydrate 442.8g	0%
Dietary Fiber 32.0g	0%
Total Sugars 50.4g
Protein 152.3g	0%

Vitamin D 53.7IU	0%
Calcium 3039.4mg	0%
Iron 22.3mg	0%
Potassium 10634.9mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 50.8%

Protein: 12.6%

Carbs: 36.6%