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Cheesy Loaded Meatloaf Casserole

A square-pan beef casserole topped with two cups of mashed potatoes, a cup of Cheddar, and four slices of cooked bacon. Cut into six rectangles after resting.
Prep Time 20 minutes
Cook Time 40 minutes
Resting Time 10 minutes
Total Time 1 hour 10 minutes
Course Main Course
Cuisine American
Servings 6 servings

Ingredients
  

Meatloaf Base

  • 1 pound ground beef
  • 1/2 cup breadcrumbs
  • 1 large egg
  • 1/4 cup milk
  • 1/4 cup onion finely chopped
  • 1 teaspoon garlic powder
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 tablespoon Worcestershire sauce
  • 1/2 cup ketchup divided

Topping

  • 2 cups prepared mashed potatoes
  • 1 cup Cheddar cheese shredded
  • 4 slices cooked bacon crumbled
  • 2 tablespoons green onions or chives chopped, optional

As Needed

  • Cooking spray for the dish
  • Additional milk to loosen potatoes

Instructions
 

Bake the Casserole

  • Preheat oven to 375°F and spray a 9×9-inch baking dish. Combine breadcrumbs, milk, egg, onion, garlic powder, salt, pepper, Worcestershire, and 1/4 cup ketchup, then gently mix in beef.
  • Press beef evenly into the dish and spread the remaining 1/4 cup ketchup over it. Bake at 375°F for 20–25 minutes until the surface sets; carefully spoon off pooled excess fat.
  • Meanwhile, warm the mashed potatoes over medium-low heat until spreadable, adding milk as needed. Spread all 2 cups over the meat, then top with all 1 cup Cheddar and the crumbled cooked bacon.
  • Bake 10–15 minutes more until cheese melts, beef reaches at least 160°F, and the casserole center reaches 165°F. Continue baking if needed to reach these temperatures.
  • Let stand 10 minutes, cut into 6 equal rectangles, and add green onions or chives if using.

Notes

  • Refrigerate within 2 hours; the oldest cooked ingredient determines the 3–4-day storage window.
  • Heat refrigerated portions through to 165°F.
  • For longer storage, freeze portions up to 2 months and thaw in the refrigerator.
Keyword cheesy loaded meatloaf casserole