1With rolling pin, flatten each slice of bread. Spread 1 tablespoon of the peanut butter on each of 2 slices of bread and 1 tablespoon jelly on each of the other 2 slices of bread.
2To make 2 stacks, place 1 peanut butter-spread bread slice, peanut butter side up, on top of 1 jelly-spread bread slice, jelly side up. Roll up each stack, jelly-roll fashion, to make 2 rolls. Freeze rolls 15 minutes.
3On sheet of waxed paper, crush granola bar. Remove rolls from freezer. With remaining 1 tablespoon peanut butter, spread thin layer on outside of each roll; roll each in crushed granola bar. Cut each into 4 small rolls. Serve, or if desired, freeze 15 minutes longer to set before serving.