Make This: Fancy Pants Grilled Cheese

A quick recipe today - we like to make fancy pants grilled cheeses around here. For a night when you don't have much time or are craving something light, it works out well. 

You need:
bread (of some sort)
cheese (of some sort)
tomato
pesto sauce
butter

1) butter your bread (I recommend a sourdough, personally) on the outside and on the inside, smear the pesto sauce
2) pile on sliced tomato, cheese of your choosing (a nice cheddar/provelone combo is always in good taste but you could branch out and be even more fancy pants if you wanted) and another tomato slice
3) grill


*note: this would be great on a panini press. we don't have one. but it would be great.