This recipe was born one quiet, rainy Saturday afternoon when I couldn’t work out if I wanted brownies or cookies. With the self-assurance of Neil Armstrong and Buzz Aldrin planting their flag on the moon, I crowned a tin of brownies with a layer of chocolate chip cookie dough, and haven’t felt bad about being indecisive since. If you don’t want to use raw egg in the cookie dough, replace it with 3 tablespoons of whole milk. You’ll need 40g less flour.