Weigh out the ingredients
You'll need flour, cocoa powder, brown sugar, sugar, baking powder, salt, oil, eggs, vanilla, peppermint extract, and powdered sugar.
Combine dry ingredients
In a medium bowl, whisk together the flour, cocoa powder, baking powder, and salt. Set aside.
In a large bowl, combine the granulated sugar, brown sugar, oil, eggs, vanilla, and peppermint extract.
Whisk wet ingredients
Gently fold the dry ingredients into the wet until just combined. Do not over-mix! Cover the bowl and chill in the fridge overnight.
Fold dry ingredients into wet
Using a 1 tablespoon cookie scoop, scoop the cookie dough.
Scoop the cookie dough
Roll each cookie dough ball in the powdered sugar.
Roll in powdered sugar
Place cookie dough on the prepared baking sheet about 1 inch apart. Bake the cookies for about 8-10 minutes or until puffed up and cracked. Allow cookies to cool completely on the baking sheet before removing.
Enjoy these fudgy chocolate peppermint crinkle cookies!