There are so many ways to make flourless cookies. The term "flourless" typically means that the recipe contains no wheat flour. In these almond butter cookies, nut butter is the main ingredient and there is no flour whatsoever. All it takes is almond butter, an egg, sweetener and baking soda for these easy cookies. Alternative flours such as almond flour, coconut flour, oat flour and gluten-free 1 to 1 flour are also great options for baking flourless cookies. Gluten-free 1 to 1 flour can typically be substituted cup for cup with all purpose flour (hence the name), but it gets trickier with alternative flours as they lack gluten.