2 lb Ground meat
2    Onions; chopped
1    Clove garlic; chopped
1    Jar (14-oz) spaghetti sauce
1 cn Rotel tomatoes
1 cn (3-oz) mushrooms
1 pk (8-oz) shell macaroni
1 1/2 pt Sour cream
1/2 lb Sliced Provalone cheese
1/2 lb Mozzarella cheese

Cook ground meat in a little cooking oil in a large frying pan until
brown, stirring often. Drain excess fat. Add onions, garlic, spaghetti
sauce, tomatoes and undrained mushrooms; mix well. Simmer 20 minutes or
until onions are soft. Meanwhile cook macaroni shells according to
directions on package; drain and rinse in cold water. Pour half the shells
into a deep casserole. Cover with half the meat sauce. Spread half the sour
cream over sauce. Top with slices of provalone cheese. Repeat, ending with
mozzarella cheese. Cover casserole. Bake at 350 degrees for 35 minutes.
Remove cover; continue baking until mozzarella cheese melts and browns
slightly. Serves 8.