A "window" on the top of these cookies shows off the jam inside, but if you're feeling lazy, just sandwich the preserves between two solid cookies. They'll taste just as good.
Make-Ahead or Storage
Place unfilled cookies in a single layer between sheets of waxed paper in an airtight container. Store at room temperature for up to 3 days, or label and freeze for up to 3 months. To serve, thaw cookies, if frozen. Assemble as directed. To serve, thaw cookies, if frozen. Assemble as directed.
*Vanilla bean paste
Vanilla bean paste, a syrupy product sold at specialty stores or online, provides vanilla bean specks without the task of scraping a pod. (Nielsen-Massey is one good brand.)