INGREDIENTS
1 cup
unsalted butter, at room temperature
1 1/2 cups
sugar
1/2 cup
packed brown sugar
2
large eggs
2 1/2 tsp
vanilla
2 cups
all purpose flour
3/4 cup
unsweetened cocoa powder (I like to sub 1/4 cup special dark powder)
1 1/2 tsp
baking soda
1 1/2 tsp
baking powder
1 tsp
fine sea salt or kosher salt
1 cup
semi sweet chocolate chips (or milk)
1 cup
dark chocolate chunks