Ingredients:

1 can tomato sauce
1 tbsp brown sugar
1/2 tsp dry mustard
salt & pepper
chili powder 
sliced onions 
ground beef

Procedure:

Make sauce with first 5 ingredients. Fry hamburgers till brown. Place in casserole. Layer with onions & sauce. Pour remaining sauce over top. Bake covered at 350 degrees for 1 hr. to 1 hr and 15 minutes. Also good with Coney Island hot dog sauce on top.