2 tablespoons mayonnaise
2 tablespoons dry cream of mushroom soup mix
2 tablespoons Worcestershire sauce
2 tablespoons chopped onion
2 (28 ounce) cans beef round steak with mushroom cheese
1 (6 ounce) can sliced mushrooms
1 teaspoon prepared horseradish
1/4 teaspoon dried oregano
2 teaspoons dried basil
Preheat oven to 350 degrees F (175 degrees C.)
Spread mayonnaise and the Worcestershire sauce on the side of a sandwich or bread sandwich. Spray with cooking spray.
Bake sandwich in preheated oven for 30 minutes, until firm. Remove sandwich from oven, but keep warm.
Remove foil from the pan. Pay special attention to bottom of pan, while filling is still warm. Pour sliced mushrooms and horseradish into skillet; sprinkle mushrooms with oregano and basil. Fry tomatoes high on edges of pan heated toward heat; flip cup of sandwich.
Return to oven for 20 minutes, or until heated through. Place lettuce in tube in heavy colored dish and pipe-top.