While these cookies invert the classic ratio of crust to custardy filling (these are for you, crust lovers), they're an affectionate homage to the dessert I associate most with the holiday season, and my lovingly stubborn grandpa. Blitzed graham crackers and all-purpose flour come together in a buttery, brown-sugar-sweetened dough that stays soft and chewy after baking. In the center of each thumbprint, a dollop of silky, tart lime filling sets during the cookies' brief stint in the oven, just like their full-size namesake.
A few things to know about supermarket pies: Unlike homemade crust that relies on the careful incorporation of butter and flour, most supermarket crusts are made with oil, which is fully blended with the flour. The result is a thick, grainy crust that, while far less pleasing than a butter crust, is shelf-stable, as it remains intact as it absorbs the moisture of the apple filling.