Weigh out the ingredients
You'll need butter, sugar, egg, vanilla, flour, baking powder, baking soda, salt, and cinnamon.
Make the brown butter
Make the brown butter by heating the butter over medium heat, swirling to even out the color. The butter will be ready once the fat solids have separated and darkened, and the butter is an even medium amber color.
Make the cookie dough by whisking together the cooled brown butter and sugar, mixing in the egg & vanilla, and then folding in the dry ingredients. Chill for 30 minutes.
Make the cookie dough
Use a 3 tablespoon cookie scoop to portion the cookie dough.
Portion cookie dough
Roll each cookie dough ball in cinnamon sugar, then place back on the baking sheet. Freeze for 15 minutes.
Roll in cinnamon sugar
Bake the cookies at 350 degrees F for about 12 minutes.
Enjoy these brown butter snickerdoodles with a big glass of milk!