Start with two slices of bread. White, whole wheat are better.
Smear both sides with a thin layer of creamy peanut butter. Chunky if that’s your thing.
Add enough chocolate chips (preferably Ghiardelli) to cover most of one side. Flip closed.
Butter outside surfaces. Grill on a hot skillet until bread is browned and peanut butter and chocolate are melted.
Slice on a diagonal. Serve warm with a glass of cold milk.
Decadence worthy of Elvis.