2 lbs. lean ground beef
2 med. onions
1 clove garlic, crushed
1 jar (14 oz.) spaghetti sauce
1 can sliced mushrooms
8 oz. shell macaroni
1 1/2 pts. sour cream
1 pkg. sliced Provolone cheese
1 pkg. Mozzarella cheese

Fry beef, crumble, drain. Add onions, garlic, sauce, mushrooms and mix well. Simmer 20 minutes.

Cook macaroni shells according to package directions. Pour 1/2 shells in deep casserole dish, cover with 1/2 meat-tomato sauce. Spread 1/2 of sour cream over sauce. Top with slices of Provolone cheese. Repeat process ending with Mozzarella cheese. Cover casserole. Bake at 350 degrees for 30-40 minutes. Remove cover until cheese melts and browns slightly.