*If working with a limited amount of tartlet pans, you can bake graham cracker crusts in batches. After step 2, divide graham cracker mixture into 16 portions. Prepare and bake crusts as directed. Let crusts cool completely; carefully remove from tart pans, and place on a plate or a rimmed baking sheet. Clean tart pans and repeat with remaining graham cracker mixture as needed. Crusts can be made up to 2 days ahead and stored in an airtight container.