Bacon Cheeseburger Grilled Cheese Casserole - Easy Family Dinner - Recipes by Clare

Ingredients

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