And a very Happy National Cookie Day to you, kind Sir. As if we needed a day smack dab between Thanksgiving and Christmas to celebrate cookies... But we're not ones to shun a public holiday so, let the celebrations begin! We'll kick it off with this gluten-free, dairy-free gingerbread cookie sandwich recipe. Want to be the one bearing delicious, fancy, powder-sugar-sprinkled cookies and include all your gf + df friends at your next holiday party?! Here you go. And you're welcome.