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

Brown beef and onion. Drain. Add spaghetti sauce mix and tomato sauce. Simmer to let flavors combine. Spread mixture in a 9 x 12 inch pan. Layer with sour cream and cheese. Spread crescent rolls on top. Brush with melted butter and sprinkle with Parmesan cheese. Bake at 375 degrees for 20 to 30 minutes. (8 to 10 servings.)