Preheat oven to 350 degrees.
Cook meat in large skillet until done, then drain fat.
Add onions, MID'S Sauce, garlic, tomatoes and mushrooms (do not drain), and mix well. Simmer 20 minutes.
Cook macaroni as directed and rinse.
Pour half of macaroni in large baking dish.
Cover with half of meat mixture then half of the sour cream. Top with provolone cheese.
Repeat layers, but top with mozzarella cheese.
Bake 35 to 40 minutes.