Prep your tools: Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat.
Mix dry ingredients: In a bowl, whisk together almond flour, sweetener, salt, and baking powder to break up clumps.
Cream the butter: In a separate bowl, beat the softened butter with a hand mixer for 1–2 minutes until fluffy and pale.
Add the egg and vanilla, and mix until smooth.
Combine: Add the dry mixture to the butter mixture. Stir or mix on low until a soft dough forms. If using almond extract, zest, or chocolate chips, fold them in now.
Chill briefly (optional but helpful): If the dough feels sticky, chill for 10–15 minutes.
This makes shaping easier and improves the texture.
Shape the cookies: Scoop about 1 tablespoon of dough per cookie. Roll into balls and place 2 inches apart on the baking sheet. Gently flatten to about 1/3 inch thick.
For a classic butter cookie look, press a fork crosshatch on top.
Bake: Bake for 9–12 minutes, until the edges are lightly golden. The centers should still look soft—don’t overbake.
Cool completely: Let the cookies cool on the sheet for 10 minutes, then transfer to a rack. They firm up as they cool.
Optional finish: Sprinkle with a tiny pinch of granulated keto sweetener or cinnamon while warm.