Mashed-Potato Casserole with Gouda and Bacon

A luxurious casserole combining creamy mashed potatoes with smoky Gouda cheese and crispy applewood-smoked bacon. This hearty dish is topped with extra cheese and bacon for the perfect comfort food experience.

8 servings

1 hr 15 min

Published October 4, 2025

Ingredients

•6 slices thick-cut smoked bacon (preferably applewood-smoked)
•3 large large green onions (white and pale green parts only), finely chopped
•3 pounds russet potatoes, peeled, cut into 11/2-inch cubes
•¾ cup sour cream
•⅓ cup whole milk
•¼ cup butter
•2 cups smoked Gouda
•divided

Cooking Instructions

1.
Butter 13x9x2-inch baking dish. Cook bacon in heavy large skillet until golden brown and crisp. Transfer to paper towels to drain. Chop bacon. Place in medium bowl. Add green onions; toss to distribute evenly.
15 min
2.
Place potatoes in large pot and add enough cold water to cover. Sprinkle with salt. Cover and boil with lid slightly ajar until potatoes are tender, 15 to 20 minutes. Drain well.
20 min
3.
Return potatoes to pot. Cook over low heat, stirring often, until potatoes are dry and light film forms on bottom of pot, about 2 minutes. Add next 3 ingredients. Using potato masher, mash until almost smooth. Stir in 1 1/2 cups smoked Gouda and 1 cup bacon mixture. Season with salt and pepper. Spread potato mixture in prepared baking dish. Sprinkle remaining 1/2 cup Gouda over. DO AHEAD: Can be prepared 8 hours ahead. Cover and chill potato mixture and remaining bacon mixture separately.
10 min
4.
Preheat oven to 375°F. Bake potatoes until cheese melts and edges of potatoes are bubbling, about 30 minutes (40 minutes if chilled). Sprinkle reserved bacon mixture over and serve.
30 min

Cooking Instructions

Butter 13x9x2-inch baking dish. Cook bacon in heavy large skillet until golden brown and crisp. Transfer to paper towels to drain. Chop bacon. Place in medium bowl. Add green onions; toss to distribute evenly.

15 min

Place potatoes in large pot and add enough cold water to cover. Sprinkle with salt. Cover and boil with lid slightly ajar until potatoes are tender, 15 to 20 minutes. Drain well.

20 min

Return potatoes to pot. Cook over low heat, stirring often, until potatoes are dry and light film forms on bottom of pot, about 2 minutes. Add next 3 ingredients. Using potato masher, mash until almost smooth. Stir in 1 1/2 cups smoked Gouda and 1 cup bacon mixture. Season with salt and pepper. Spread potato mixture in prepared baking dish. Sprinkle remaining 1/2 cup Gouda over. DO AHEAD: Can be prepared 8 hours ahead. Cover and chill potato mixture and remaining bacon mixture separately.

10 min

Preheat oven to 375°F. Bake potatoes until cheese melts and edges of potatoes are bubbling, about 30 minutes (40 minutes if chilled). Sprinkle reserved bacon mixture over and serve.

30 min