Chocolate Peanut Butter Cups: Illustrated Instructions

Blend together 1 cup peanut butter and 1/2 cup powdered sugar using a handheld mixer or stand mixer until smooth. If you have a pastry bag, fit it with a coupler or large (1/2 inch or larger) round tip. Fill the bag with the peanut butter filling and pipe the peanut butter into the chocolate shell, leaving a small margin at the top. If you don't have a pastry bag, you can either use a Ziploc bag with a hole cut in the corner, or spoon small amounts into the cups and press down to fill them completely. Smooth the tops level with a knife, spatula, or very sanitary finger.