Creamy Garlic Mashed Potato Casserole
Indulge in the ultimate comfort food with this Creamy Garlic Mashed Potato Casserole, a rich and satisfying dish perfect for family dinners, holiday gatherings, or potlucks. Featuring buttery mashed russet potatoes infused with the deep, mellow flavor of roasted garlic, this casserole is elevated with tangy sour cream, creamy whole milk, and a decadent layer of melted cheddar and Parmesan cheeses. The golden-brown crust adds a delightful texture, while a sprinkle of fresh parsley provides a touch of vibrant color. Ready in just over an hour, this make-ahead-friendly recipe is a side dish masterpiece that pairs beautifully with anything from roasted meats to seasonal veggies.
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Recipe Information
Ingredients
- 4 pounds russet potatoes
- 2 heads garlic
- 1 cup unsalted butter
- 1.5 cups sour cream
- 0.75 cup whole milk
- 1 cup shredded cheddar cheese
- 0.5 cup Parmesan cheese
- 2 teaspoons salt
- 0.5 teaspoon black pepper
- 2 tablespoons fresh parsley (optional, for garnish)
- 1 tablespoon olive oil
Instructions
Preheat your oven to 400°F (200°C).
Cut the tops off the garlic heads, drizzle with olive oil, wrap in aluminum foil, and roast in the oven for 30-35 minutes until the cloves are soft and golden. Let them cool slightly.
Peel and chop the potatoes into large chunks. Place them in a large pot of salted water and bring to a boil. Cook for 15-20 minutes or until the potatoes are fork-tender.
Drain the potatoes and return them to the pot. Let them sit for 1-2 minutes to let excess moisture evaporate.
Squeeze the roasted garlic cloves out of their skins and mash them into a paste.
Add the roasted garlic paste, unsalted butter, sour cream, whole milk, salt, and black pepper to the potatoes. Mash until creamy and smooth. Adjust seasoning as needed.
Spread the mashed potatoes evenly into a greased 9x13-inch baking dish.
Sprinkle the shredded cheddar cheese and Parmesan cheese on top of the mashed potatoes, covering evenly.
Place the casserole in the preheated oven and bake at 400°F (200°C) for 15-20 minutes, or until the cheese is melted and golden brown.
Remove the casserole from the oven and let it cool for 5 minutes. Sprinkle with fresh parsley if desired.
Serve warm and enjoy the comforting, creamy goodness!
Nutrition Facts
Calories |
4392 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 236.1 g | 303% | |
| Saturated Fat | 140.7 g | 703% | |
| Polyunsaturated Fat | 1.9 g | ||
| Cholesterol | 608 mg | 203% | |
| Sodium | 6366 mg | 277% | |
| Total Carbohydrate | 484.5 g | 176% | |
| Dietary Fiber | 36.4 g | 130% | |
| Total Sugars | 54.5 g | ||
| Protein | 126.4 g | 253% | |
| Vitamin D | 2.0 mcg | 10% | |
| Calcium | 2550 mg | 196% | |
| Iron | 24.3 mg | 135% | |
| Potassium | 11162 mg | 237% | |
*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.
