Chewy, chocolatey, and a great use for your leftover sourdough starter, these Brown Butter Sourdough Chocolate Chip Cookies are so delicious!
In a medium bowl, mix together the flour, baking powder, baking soda, and salt. Set that aside.
Add the room temperature brown butter to a large bowl. Add the brown sugar and granulated sugar. Turn the hand mixer or stand mixer on medium speed.