Brown meat and onions, drain. Stir in taco seasoning, beans, and tomato sauce. Summer 5 min
Unroll dough into 4 long rectangles. Place in un-greased 13x9 baking dish. Press over bottom and 1 inch up the side to form a crust. Brush dough with oil and sprinkle with cornmeal. Soon hot meat mixture over crust and bake for 25-30 minutes.
Sprinkle with cheese and return to oven until cheese is melted. Cut into squares and top with lettuce and tomato. Serve with taco sauce.