Boil potatoes until tender in 2 quart saucepan. Meanwhile, saute onion and bell pepper in a large skillet in 2 tablespoons of butter or margarine. Add mushrooms and heat for 1 minute, stirring constantly. Season ground beef with salt and pepper and add garlic sauce, egg, bread crumbs and mix together well. Make 4 balls and flatten each into a patty. Place sauteed onion mixture on two of the patties. Place the plain patty over the one topped with the mixture and form into one patty. Take remaining onion mixture and place in 1 quart saucepan. Fry patties in skillet till cooked turning frequently. Place cheese slices on patties and let melt. Drain potatoes and mash. Add 2 tablespoons of margarine and 1/2 cup of milk and blend till smooth. Add mushroom steak sauce to onion mixture and heat till hot. Place hamburger steak and potatoes on plate and top with mushroom sauce.
Cajun Country -- New Iberia, Louisiana