Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a medium bowl, mix together peanut butter, brown sugar, and the egg until smooth.
Fold in the chocolate chips with a spoon or spatula.
Scoop the dough (about 1 tablespoon per cookie) onto the prepared baking sheet, leaving some space between each.
Bake for 8–10 minutes, or until the edges are just golden. Don’t overbake unless you're into crunchy cookies.
Let them cool on the pan for a few minutes before moving to a wire rack. Enjoy warm or save for later (they store great in a sealed container).