Chunky Mint Chocolate Cookies Recipe

Preheat oven to 350 degrees F.

With an electric mixer, cream together the butter and sugars on medium speed.

Add the egg, then the egg yolk, mixing for about 1 minute after each addition. Mix in the vanilla extract.

In a separate bowl, whisk together the baking soda, baking powder, salt, flour, and unsweetened cocoa powder.

Add 1/2 of the dry ingredients to the wet. Mix for about 1 minute on low speed.

Add the rest of the dry ingredients and mix on low speed until combined. By hand, fold in the mint chips.

Drop by scoops onto ungreased baking sheet or silicone mat.

Bake for 10 to 12 minutes until sides *slightly* begin to brown.

Allow to cool on the baking sheet for 2 to 3 minutes and transfer to a wire rack.