MAKES 36 SANDWICH COOKIES
Glittering cookies with lemony centers sparkle inside and out, making these a gorgeous addition to your gluten-free cookie tray. Lemon zest and lemon juice add bright citrus flavor. For variation, substitute lime or orange instead of lemon and coat cookies in orange or light-green sanding sugar. Unassembled cookies can be kept in a tightly covered container at room temperature for up to 4 days. They freeze well. Once filled, keep sandwich cookies refrigerated or freeze for future use.