Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or a silicone baking mat.

In a mixing bowl, add the nut butter, powdered sweetener, egg, and vanilla extract. Mix with a hand mixer or whisk until smooth and well combined.

Sprinkle in baking soda, salt, and almond flour if using. Mix until a thick cookie dough forms. The dough should be soft but not sticky.

If using chocolate chips or chopped nuts, gently fold them into the dough using a spatula.

Scoop tablespoon-sized portions of dough onto the prepared baking sheet, spacing them about 2 inches apart. Use a fork to gently press a crisscross pattern into each cookie, flattening them slightly.

Bake for 8–12 minutes, depending on size and desired texture. The cookies should be lightly golden around the edges but still soft in the center.

Remove from the oven and let the cookies cool on the baking sheet for 10 minutes before transferring to a cooling rack. They will firm up as they cool.