1. Set oven to broiler heat. 2. Place the toasted bun halves on a baking sheet. 3. Lightly spread with mayonnaise then mustard. 4. Layer as follows starting with roast beef then sliced tomato, red onion, salt, pepper the sliced cheese on top. 5. Broil 3-6 inches from the heat for about 2-4 minutes or until the cheese has melted and is lightly browned (keep an eye on it this will brown fast). 6. Delicious! ---------------------------------------------------------------------------
Nutrition
Ingredients