Using hand mixer combine room temperature butter and erythritol.
Add egg, vanilla, baking soda, and maple syrup and mix until combined well.
Slowly add the almond flour as you mix. Once you have formed a dough fold in the macadamia nuts.
Don't worry, the dough will be sticky.
Place balls of dough onto a greased baking sheet and flatten out to desired cookie size.
Bake in 350 degree oven for 12 minutes.
Allow to cool for at least 20 minutes. Enjoy!