2 lbs. ground beef
1/4 c. chopped onion
1 env. spaghetti sauce mix
16 oz. tomato sauce
1 1/2 c. Mozzarella cheese, grated
1/2 c. sour cream
1 (8 oz.) can refrigerated crescent rolls
2 tbsp. butter, melted
1/3 c. Parmesan cheese

Brown ground beef and onions; drain. Add spaghetti sauce mix and tomato sauce. Simmer gently to let flavors combine. Spread meat mixture into 9x13 pan. Layer on cheese and sour cream. Top with crescent rolls brushed with butter and sprinkle with Parmesan. Bake at 370 degrees for 20-30 minutes. Serves 8-10.