Moonpies are a Southern snack that dates back to 1917. Although they come in many flavors, this version adds festive sprinkles to the classic combo of graham cookies, marshmallow filling, and chocolate coating.
For filling, in a medium bowl stir together 2 tsp. hot water and 1/4 tsp. salt until salt is dissolved. Add one 7-oz, jar marshmallow creme, 1/2 cup shortening, and 1/3 cup powdered sugar. Beat on medium until combined.