All-American Pizza Burgers Recipe - The Perfect Fusion of Pizza and Burgers

Ingredients

• 1.5 lb (680 g) of lean ground beef
• 1.5 lb (680 g) of turkey sausage
• 1.5 tsp of salt
• 1 tsp of pepper
• vegetable cooking spray
• 1 (14 oz (397 g)) jar of pizza sauce , divided
• 0.75 cup of fresh grated parmesan cheese
• 1 medium onion , chopped
• 12 slices of mozzarella cheese
• 12 hamburger buns