INGREDIENTS
1 cup
all-purpose flour (spoon & leveled)
1/3 cup
natural unsweetened cocoa powder1
1/3 cup
Hershey's special dark cocoa powder1
1 tsp
baking soda
1/8 tsp
salt
1/2 cup
unsalted butter, softened to room temperature
1/2 cup
granulated sugar
1/2 cup
packed light or dark brown sugar
1
large egg, at room temperature
1 tsp
pure vanilla extract
2 tbsp
milk
1 cup
semi-sweet or dark chocolate chunks and/or chips, plus a few more for topping2
sea salt for sprinkling