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Close-up of creamy potato layers under a golden cheese crust, scattered with smoky bacon pieces.

Loaded Twice Baked Potato Casserole

Creamy baked russet potatoes combined with bacon, sharp cheddar cheese, sour cream, and green onions, finished until golden and bubbly for a comforting, crowd-pleasing casserole.
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Course: Side Dish
Cuisine: American
Keyword: Loaded Twice Baked Potato Casserole
Servings: 6

Ingredients

  • 8 medium russet potatoes scrubbed clean
  • 2 tablespoons olive oil
  • 1 pound bacon cooked until crisp, crumbled, and divided
  • 2 cups sharp cheddar cheese freshly grated and divided
  • ½ cup mayonnaise
  • 1 cup sour cream
  • 6 green onions thinly sliced and divided
  • Kosher salt to taste
  • Freshly ground black pepper to taste

Instructions

  • Preheat the oven to 400°F (200°C). Lightly grease a 9×9-inch baking dish with nonstick cooking spray and set aside.
  • Rub the potatoes evenly with olive oil and season generously with kosher salt. Arrange them on a baking sheet or place them directly on the oven rack. Bake for 45–60 minutes, turning once halfway through, until the potatoes are tender when pierced with a fork.
  • Remove the potatoes from the oven and allow them to cool for approximately 15 minutes, or until they are safe to handle. Reduce the oven temperature to 350°F (175°C).
  • Cut the potatoes into bite-sized pieces, leaving the skins intact, and transfer them to a large mixing bowl.
  • Add the sour cream and mayonnaise to the bowl and gently stir until the potatoes are evenly coated.
  • Fold in 1½ cups of the grated cheddar cheese, ¾ of the green onions, and ¾ of the crumbled bacon. Mix carefully to avoid breaking the potatoes.
  • Transfer the mixture to the prepared baking dish and spread it evenly. Top with the remaining cheese and bacon.
  • Cover the dish with aluminum foil and bake for 20 minutes. Remove the foil and continue baking for an additional 10 minutes, or until the cheese is fully melted and lightly bubbling.
  • Remove from the oven, garnish with the remaining green onions, and serve warm.

Notes

This recipe is naturally gluten-free when prepared with care. Ensure that the bacon, mayonnaise, sour cream, and nonstick cooking spray are all certified gluten-free, as some brands may contain additives or be subject to cross-contamination. No additional substitutions are required.