How to Make Savory Ground Beef Casserole

Ingredients

• 1 lb. uncooked penne or rigatoni pasta (or your favorite pasta)
• 1 medium onion, chopped
• 1 lb. extra-lean ground beef
• 4 tablespoons olive oil
• 3 cloves garlic, crushed
• 1 ½ teaspoons dried oregano
• 1 ½ cups tomato sauce
• Salt and pepper to taste
• 2 cups shredded cheddar cheese