You will need:

A box of peanut butter cookie mix
1 egg
Jelly or chocolate drops

Make dough as directed. Shape into 1 inch balls and place 2 inches apart on cookie sheet (ungreased). Make a dent in the middle of each ball with your thumb. Bake at 375 degrees for 8-10 minutes. Fill dents with jelly or chocolate drops. Cool 1 minute, then remove from cookie sheet.