Fit your mixer with the paddle attachment, if you have one. Beat together the sugar, butter, almond butter, and egg yolk for 5 minutes on medium speed and until well combined and a little fluffy.
*For Dairy-Free:
Replace the butter with refined coconut oil or hydrogenated palm oil. They both act like butter without any added flavor. In addition, replace the Cup4Cup Flour with just 1 cup of Carla's Gluten Free All-Purpose Flour Blend Recipe.
**For Egg-Free:
Replace each egg white with 2 tablespoons of liquid from a can of cannellini beans and each egg yolk with 1 tablespoon of fat (butter, refined coconut oil, hydrogenated palm oil).
https://glutenfreerecipebox.com/gluten-free-almond-butter-cookies/