Spread the peanut butter onto 4 slices of bread, keeping the peanut butter mostly in the center. Spread the jelly in the center of the remaining 4 slices and assemble the sandwiches.
Using the cutter, press it into the center of each sandwich, hold it down for 30 seconds, and remove the outer crusts before lifting the crimper from the bread.
Notes
Nutritional information will vary slightly depending on the gluten-free bread brand you're using. For best results, use fresh "white" gluten-free bread.