2 lbs. hamburger
1/4 c. onions
16 oz. spaghetti sauce
1 1/2 c. Mozzarella cheese, grated
1/2 c. sour cream
1 (8 oz.) refrigerated crescent rolls
2 tbsp. butter, melted
1/3 c. Parmesan cheese

Brown together hamburger and onions and drain. Add sauce to pan and simmer gently. Spread into a 9x13 inch pan.

Mix Mozzarella cheese and sour cream together and spread on top of meat mixture. Layer crescent rolls on top of cheese mixture and brush with melted butter. Sprinkle with Parmesan cheese. Bake at 375 degrees for 20-30 minutes.