Chocolate Chocolate Chip Cookies

Truly one of the best cookies I have ever eaten!  This is a copycat recipe of Levain Bakery's Chocolate Peanut Butter Chip Cookie that has been tweaked. The peanut butter chips are omitted in this recipe, but if you are a fan of them, you can substitute them for the chocolate chips or use them both to your liking).  They are large-size cookies, slightly crispy on the outside and moist like a brownie on the inside.  They are truly decadent and will fulfill your chocolate craving.  All you need is a big glass of milk.  Here's Stephen tasting a fresh batch.

Ingredients:
2 sticks COLD unsalted butter
1-1/4 cup sugar
2 eggs
1/2 cup dark cocoa powder
2-1/2 cups flour
1/4 tsp kosher salt
1 tsp baking powder
1/4 tsp baking soda
2 cups semi-sweet chocolate chips
1 cup white chocolate chips

Separately mix the flour, kosher salt, baking powder and baking soda until blended.  With an electric mixer, beat the cold butter and sugar until fluffy.  Add the eggs, one at at a time, until blended.  Mix in the cocoa powder.  Add the flour mixture and mix until just blended (do not overmix). Stir in the chocolate chips. Drop 1/4 cup size onto a baking sheet.  Bake for 18 min. at 375 degrees.