If you can get over the mad scientist aspect of a microwavable grilled cheese sandwich, Chef M.J. Brando Grilled Cheese Sandwiches are really quite good.
Two frozen sandwiches, American or Cheddars are $3.99 and ready to eat in 90 seconds. Introduced four months ago, they're solid exclusively in South Florida at Winn-Dixie.
Each M.J. sandwich is wrapped in plastic trays that it's manufacturers calls a "grill pad sleeve." It has to remain wrapped around the sandwich as it cooks. The result is a surprisingly authentic sandwich, with almost the same toasted texture you get from a pan.
Saturday, by the way, is National Grilled Cheese Day.