CP Pot Luck Casserole

CP Pot Luck Casserole

8 oz. penne pasta
2 pounds lean ground beef
2 cups coarsely chopped onion
3 cups chunky spaghetti sauce
1 1/2 cups sour cream
4 cups (16 oz) Mozzarella cheese, shredded

Cook pasta as pkg. directs. Drain and rinse with cold water. Brown ground beef and onion;drain. Add spaghetti sauce and bring to a boil. Reduce heat and simmer about 5 minutes. In sprayed slow cooker, layer with half the pasta, meat, sour cream and cheese. Repeat layers, ending with the cheese. Cover and cook on low for 4 to 4 1/2 hours to heat through. Serves 8 to 10