Leftover roast beef or steak
Onion
Elbow noodles
Spaghetti sauce
Cheese

Cut leftover meat into bite-size chunks and fry with onion until cooked through. Meanwhile, cook noodles, enough to serve family. Combine fried meat, cooked noodles and spaghetti sauce to taste. Layer slices of cheese over top and place in oven until the cheese melts.