1 cup unsalted butter, softened
1 1/3 cup white sugar
2/3 cup brown sugar, packed
2 eggs, room temperature
2 ½ teaspoons vanilla extract
1 tablespoon milk
2 2/3 cups all-purpose flour
1/3 cup unsweetened cocoa powder
1 teaspoon baking soda
½ teaspoon baking powder
1 ½ teaspoons sea salt
1 cup dark chocolate chunks
½ cup semisweet chocolate chips
Preheat the oven to 375 F.
In a large mixing bowl, combine the butter and sugars, and beat until smooth. Add the egg, vanilla and milk, and beat again until smooth.
In a separate bowl, whisk together the flour, cocoa powder, baking soda, baking powder and sea salt.
Mix the dry ingredients into the wet half at a time, mixing after each addition. Add the chocolate chips, and mix well to incorporate.
Line a baking sheet with parchment paper. Drop dollops about the size of 2-3 tablespoons onto the sheet, with about 1 ½ inches between for them to spread. Bake for 8-12 minutes, until they're crisp around the edges but still slightly gooey in the center. Let them cool on the baking sheet for a minute or two before transferring them to a wire rack to cool completely. Enjoy slightly warm.