– Butter- No respectable shortbread cookie is complete without the addition of lots of savory butter flavor. – Swerve- A low carb way to get the sweetness you expect in a cookie without all of the guilt. – Almond Extract- Gives that nutty flavor that makes these keto cookies so craveworthy. – Eggs- Helps bind them so they're not too crumbly. – Superfine Almond Flour- The secret to making these cookies low carb is to use almond flour instead of all purpose flour.