Ohhh yes—this is peak comfort food 🥔🧀 Loaded Mashed Potato Casserole is basically a baked potato in casserole form, and everyone goes back for seconds.
Loaded Mashed Potato Casserole
Ingredients
- 3 lbs russet potatoes, peeled & cubed
- ½ cup butter
- 1 cup sour cream
- ¾–1 cup milk or half-and-half (warm)
- 2 cups cheddar cheese, shredded (divided)
- 6 slices bacon, cooked & crumbled
- ½ cup green onions, sliced
- 1 tsp salt
- ½ tsp black pepper
- Optional: garlic powder to taste
Instructions
- Cook potatoes
Boil in salted water 15–20 minutes until fork-tender. Drain well. - Mash
Mash hot potatoes with butter, sour cream, milk, salt, pepper (and garlic powder if using) until creamy. - Mix the goods
Fold in:- 1½ cups cheddar
- Most of the bacon
- Half the green onions
- Assemble
Spread into a buttered 9×13 dish.
Top with remaining cheese and bacon. - Bake
Bake at 375°F (190°C) for 25–30 minutes, until hot and bubbly. - Finish
Sprinkle with remaining green onions before serving.
Make-Ahead & Freezer Friendly
- Assemble, cover, and refrigerate up to 2 days
- Bake straight from fridge (add 10–15 minutes)
- Freeze without toppings for best texture
Easy Upgrades
- 🧄 Roasted garlic mashed potatoes
- 🧀 Swap cheddar for Colby-Jack or pepper jack
- 🌶️ Jalapeños for a loaded-loaded version
- 🥩 Add chopped ham or leftover brisket
Perfect with steak, chicken, or honestly… a fork and no shame 😄 Want a slow cooker, lighter, or twice-baked style version?
