This simple low-carb cookie is easy to make. Allrecipes has great recipes for low-carb cookies - yes, many use sugar and tend to be small, but those of us who practice controlled carb can still enjoy them. Focus on meringues, macaroons, or nut-predominant recipes.
Preheat oven to 350 degrees F (175 degrees C). Line a baking sheet with a silicone baking mat.
Mix peanut butter, sugar substitute, egg, and vanilla extract together in a bowl. Drop 16 spoonfuls of dough 1 inch apart onto the prepared baking sheet.
Bake in the preheated oven until set, about 12 minutes.
Per Serving: 109 calories; protein 4.4g; carbohydrates 11.9g; fat 8.4g; cholesterol 11.6mg; sodium 78.4mg.