Spicy, chewy, nutty snickerdoodles made with browned butter and Bailey's Irish Cream are hard to resist. Roasted cinnamon and chipotle bring out a spicy, rich heat that pulls everything together. Cookie dough can be formed and frozen for up to three months - just roll them in cinnamon sugar before baking. You can make these with cream of tartar or without. They are unusual and scrumptious.