Preheat the oven to 175°C (350°F) and line a baking tray with parchment paper.
In a large mixing bowl, combine the almond butter, egg, vanilla extract, and melted butter. Mix with a silicone spatula until smooth and well combined.
Add the almond flour, powdered erythritol, baking powder, and sugar-free chocolate chips. Mix until a thick cookie dough forms.
Divide the dough into 10 equal portions and place them onto the prepared baking tray.
Shape the cookies. Press them thinner for crispier cookies or leave them thicker for softer, chewier cookies.
Bake for 12–15 minutes, until the edges are lightly golden.
Remove from the oven and let the cookies cool completely on the tray before serving.