Knife and Fork Meatball Sandwiches Recipe - BettyCrocker.com

Ingredients

• 3/4 lb extra-lean (at least 93%) ground beef
• 1 box (9 oz) frozen spinach in a pouch, thawed, squeezed and patted dry with paper towels
• 1 slice whole wheat bread, torn into small pieces
• 1/2 teaspoon onion powder
• 1 teaspoon Italian seasoning or 1/2 teaspoon dried oregano leaves
• 2 egg whites
• 2 cups fat-free tomato pasta sauce
• 1 loaf (8 oz) French or Italian bread
• 1/3 cup shredded mozzarella cheese