Other popular choices paired up with melted cheese are ham, roast beef, chicken, and turkey. These are known as patty melts. Patty melts were a staple of the traditional U.S. diner and were commonly found on menus as far back as the 1950s and possibly the 1940s. (Wikipedia)

 
 
Ingredients:

• 2 slices leftover roast beef
• 2 green pepper slices — cut in 2 inch pieces
• 3 mushrooms — sliced
• 2 onion slice — cut in 2 inch pieces
• 1 tablespoon butter
• 2 tablespoons LC Ranch Dressing
• Mozzarella cheese to cover

How to Prepare:

• Place roast beef on a heat proof plate or pan.
• Saute vegetables in butter until tender-crisp and place on top of beef.
• Spread dressing over the vegetables and top with mozzarella cheese.
• Broil until cheese is hot and bubbly.

*This is a quick and easy way to use up leftover roast.