Step 1

Preheat the oven to 350 degrees Fahrenheit. Line a baking sheet with parchment or waxed paper.

Step 2

Combine the peanut butter, sweetener, egg, vanilla, and butter in a bowl. Keep mixing until you form a dough.

Step 3

Shape the dough into 1-inch balls. Place them on the lined baking sheet. Make a criss-cross indentation by pressing a fork into the balls horizontally then vertically.

Step 4

Bake the balls for 12 minutes for chewy cookies, or 14 if you want them with a shortbread-like texture. Let the cookies sit on the baking sheet for 1 minute before transferring onto a wire rack to cool.