Cheeseburger Grilled Cheese Casserole

Ingredients

• Ground beef

  80% lean meat / 20% fat, raw

  16 oz or 454g

• Onions

  Raw

  1 cup, chopped or 160g

• Mayonnaise

  Regular, with salt

  4 tbsp or 55g

• Ketchup

  4 tbsp or 60g

• Mustard

  Prepared, yellow

  1 tbsp or 15g

• Salt

  Table

  1 dash or 0.4g

• Pepper

  Spices, black

  1 dash or 0.1g

• Onion powder

  Spices

  2 tsp or 5g

• Whole-wheat bread

  Commercially prepared

  8 slice or 224g

• Butter

  Unsalted

  8 tbsp or 114g

• Mozzarella cheese

  Part skim milk

  2 cup, shredded or 224g

• Cheddar cheese

  2 cup, shredded or 226g

Directions

1. Heat the oven to 400°F and lightly grease a 9x13-inch baking dish.
2. Warm a large skillet over medium-high heat. Add the ground beef and cook, breaking it into crumbles, until no longer pink; drain excess fat.
3. Stir in the chopped onions and cook until slightly softened, 2–3 minutes. Remove from heat.
4. Mix in the mayonnaise, ketchup, mustard, onion powder, and salt and pepper to taste until evenly combined.
5. Spread one side of half of the bread slices with butter and cut each slice in half. Arrange the buttered sides down to cover the bottom of the baking dish.
6. Sprinkle half of the mozzarella and half of the cheddar over the bread. Spoon the beef mixture evenly over the cheese, then top with the remaining mozzarella and cheddar.
7. Butter one side of the remaining bread slices, cut them in half, and arrange buttered sides up to cover the casserole.
8. Bake until the top is golden brown and the cheese is bubbly, 20–24 minutes. Let rest 5 minutes before serving.