The best sourdough peanut butter cookies are soft, chewy, and full of peanut butter flavor.
For easy clean up, line the baking sheet with parchment paper.
For this recipe, active sourdough starter or discard will work. It is a great way to use up extra starter, adds slight tanginess, and if long fermented will help bread down the flour.
Make sure to cream the butter and sugar together until light and fluffy. This makes the cookies soft and chewy.