Asparagus Grilled Cheese Sandwich Recipe

"The other day I got a reader request for an asparagus grilled cheese sandwich topped with an egg which sounded good. I was immediatly thinking about a croque-madame which is a grilled ham and cheese sandwich topped with an egg and I was thinking a fried egg. It was the end of the week however, and although I was lucky enough to have some asparagus left in the fridge, I was fresh out of eggs so I had to settle for just an asparagus grilled cheese sandwich. Since this sandwich was only going to have a few ingredients..."