I recently found these sandwiches in the freezer case of my store.  There are several different flavors, but my favorite is the Chicken Asiago.

You cook them in your microwave using the box it comes in.  Now the only suggestion I have about that is to place some wax paper between the box and your sandwich so you don't pick up germs from the box.  The first time I made one I made it just as the box says and that really bothered me that the cheese melted onto the box.  Lots of people have touched this box before me!

So do use a piece of wax paper and then follow the box directions.  My microwave...