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!
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.
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.
Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish with non-stick cooking spray.
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.
Add the butter, cream cheese, sour cream, and milk to the mashed potatoes. Stir until fully combined and creamy.
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.
Transfer the mashed potato mixture to the prepared baking dish, spreading it out evenly.
Sprinkle the remaining cheddar, mozzarella, and Parmesan cheeses evenly over the top of the casserole.
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.
If desired, turn on the broiler for 2-3 minutes to achieve a golden-brown top. Watch closely to avoid burning.
Remove the casserole from the oven and let it sit for 5 minutes before serving.
Garnish with chopped fresh parsley, if desired, before serving.
Calories |
4676 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 272.7 g | 350% | |
| Saturated Fat | 168.2 g | 841% | |
| Polyunsaturated Fat | 0.1 g | ||
| Cholesterol | 804 mg | 268% | |
| Sodium | 8097 mg | 352% | |
| Total Carbohydrate | 442.8 g | 161% | |
| Dietary Fiber | 32.0 g | 114% | |
| Total Sugars | 50.4 g | ||
| Protein | 152.3 g | 305% | |
| Vitamin D | 1.3 mcg | 7% | |
| Calcium | 3039 mg | 234% | |
| Iron | 22.3 mg | 124% | |
| Potassium | 10635 mg | 226% | |
*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.