Description
This Mashed Potato Casserole takes creamy mashed potatoes to the next level with sour cream, cheddar cheese, and a crispy, golden topping. It’s the ultimate make-ahead side dish for holidays or cozy weeknights.
Ingredients
3 pounds Russet or Yukon Gold potatoes, peeled and cubed
4 tablespoons unsalted butter
3/4 cup sour cream
1/2 cup whole milk (warmed)
1 1/2 cups shredded sharp cheddar cheese, divided
1 teaspoon garlic powder
Salt and pepper, to taste
1/4 cup grated Parmesan cheese
2 tablespoons chopped fresh chives (optional)
Instructions
1. Peel and cube the potatoes, then boil them in salted water until fork-tender, about 15 minutes. Drain well and return them to the pot. Mash until smooth.
2. Add the butter, sour cream, warm milk, garlic powder, salt, and pepper. Stir until everything is fully combined and the texture is fluffy and smooth.
3. Fold in 1 cup of the cheddar cheese and mix gently.
4. Spread the mashed potatoes into a greased 9×13 baking dish. Top with the remaining cheddar cheese and sprinkle the Parmesan evenly. Bake at 375°F for 25-30 minutes, until bubbly and golden.
5. Top with chopped chives before serving for a fresh pop of flavor and color.
Notes
Use warm milk to keep the potatoes fluffy and smooth.
Drain potatoes thoroughly after boiling to avoid a watery texture.
For extra flavor, fold in cooked bacon or caramelized onions before baking.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Side Dish
- Method: Baked
- Cuisine: American
Nutrition
- Serving Size: 1 portion (1/8 of casserole)
- Calories: 280
- Sugar: 2g
- Sodium: 320mg
- Fat: 16g
- Saturated Fat: 9g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 26g
- Fiber: 2g
- Protein: 9g
- Cholesterol: 45mg
Keywords: mashed potato casserole, cheesy potato bake, holiday side