2 lbs. ground beef
1 tbsp. vegetable oil
2 med. onions, chopped
1 garlic clove, crushed
1 (14 oz.) jar spaghetti sauce
1 can tomatoes
1 can mushrooms
8 oz. box shell macaroni
1 1/2 pts. sour cream
1/2 lb. sliced Cheddar or Provolone cheese
1/2 lb. Mozzarella cheese

Cook ground beef in vegetable oil Brown onions, garlic, spaghetti sauce, tomatoes, and mushrooms; mix well. Simmer until onions are soft. Cook macaroni shells; drain and rinse. Pour half the meat sauce, spread half the sour cream over sauce, and top with slices of cheese. Repeat, ending with slices of cheese. Cover and bake at 350 degrees for 35 to 40 minutes. Remove cover and bake until cheese is browned a little.