A small modification I make is to smash the peanut butter layer flat, add a small amount of jam, then roll that into a ball before wrapping it in the chocolate layer. (isachandra.com)
Using a spoon, scoop dough and roll into balls with around a 1 inch diameter. (littlemarketkitchen.com)
Roll into balls between your palms and then place on the small baking sheets about 1 - inch apart from one another. (glutenfreeonashoestring.com)