Cheesy Beef and Broccoli Bake

Ingredients

• 1/4 cup grated parmesan cheese
• 1 tablespoon olive oil
• 1 pound lean ground beef
• 1/2 teaspoon ground black pepper
• 14-ounce can tomato sauce
• 6 cups small broccoli florets
• 3 garlic cloves, minced
• 2 cups shredded cheddar cheese
• 1/4 teaspoon crushed red pepper flakes, optional
• 1 large onion, finely chopped
• 1 teaspoon salt