The classic nutty-sweet combo of peanut butter and jelly has escaped the confines of the sandwich and landed in a tart. With the help of a skewer, it becomes artfully (yet easily) swirled. It's versatile, too: Swap in almost any type of jelly -- we like raspberry and strawberry as much as the typical grape. Whatever you choose, it's a nostalgic treat for all ages.
Be careful not to crush the berries too much in Step one; you want the jam to have some texture. Liquid pectin can be substituted for the powdered pectin with no difference in results. Simply reverse the order in which the pectin and lemon juice are added.