What happens when you marry the best chocolate chip cookie ever with the best chocolate brownie ever. Magical Crowniewich babies. (Cookies + Brownies + Sandwich = Crowniewich or Crownie for short)
Add the dark brown sugar and granulated sugar and stir until sugars are incorporated and smooth. Chill the mixture for 10 minutes. (Do not skip this step. You can also transfer the mixture to a different bowl so that it is no longer being heated from the pan.)
Bake for 12 to 14 minutes, or until the edges just start to turn golden. (Do not overbake)
In a medium bowl, beat two eggs with the vanilla. Gently add in the eggs and vanilla to the dry ingredients.