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Bacon Cheeseburger Grilled Cheese Casserole

A cheesy casserole layered with seasoned beef, bacon, and sauce, tucked between buttered bread—grilled cheese meets cheeseburger in one easy, oven-baked dish.
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Ingredients
  

  • 1 lb lean ground beef
  • 1 cup yellow onion diced
  • ½ cup real bacon bits
  • ¼ cup mayonnaise
  • ¼ cup ketchup
  • 1 tbsp mustard
  • ½ tsp salt
  • ½ tsp black pepper
  • 2 tsp onion powder
  • 12 slices bread white or whole wheat
  • ½ cup margarine softened for spreading
  • 4 cups shredded mozzarella and cheddar blend

Instructions
 

  • In a large skillet over medium-high heat, brown the ground beef for 7–9 minutes, breaking it up. Drain excess grease.
  • Transfer beef to a bowl. Add diced onion, bacon bits, mayo, ketchup, mustard, salt, pepper, and onion powder. Stir until fully combined.
  • Preheat oven to 400°F. Butter 6 slices of bread (¼ cup margarine), cut in half, and place butter-side down in a greased 9x13 dish.
  • Sprinkle 2 cups of shredded cheese over the bread layer.
  • Spread beef mixture evenly over cheese.
  • Top meat with remaining 2 cups of cheese.
  • Butter remaining 6 slices of bread, cut in half, and place butter-side up on top.
  • Bake uncovered for 20–24 minutes, until the top is golden and cheese is bubbling.
  • Let rest 5 minutes before slicing. Serve warm.