Easy Italian Casserole - I Ate The 80's

Ingredients

• 1 lb ground beef
• ½ cup chopped onion
• 1 clove garlic, crushed
• 1 can (16 oz) tomato sauce
• 1 can (4 oz) mushroom stems and pieces, drained
• 1 tsp sugar
• ½ tsp dried oregano leaves
• ½ tsp dried basil leaves
• ¼ tsp salt
• ¼ tsp pepper
• 2 cups Bisquick baking mix
• ½ cup milk
• 1 egg
• 8 slices processed American cheese
• ¼ cup grated Parmesan cheese