1/2 cup + 2 tbsp unsalted butter, room temperature
2/3 cup granulated sugar
1/2 cup brown sugar
1 1/2 tsp vanilla extract
1 1/2 cup all-purpose flour
1/2 tsp baking powder
1/4 cup + 2 tbsp unsweetened cocoa powder
4 oz. dark chocolate, chopped
Sprinkles, for decoration
Preheat oven to 325°F.
In a mixing bowl or in the bowl of a stand mixer, beat butter, sugars, egg, and vanilla extract on medium-high speed until light and fluffy.
Add flour, baking powder, and cocoa powder and mix until just blended. Stir in dark chocolate chunks.
Scoop approx. 1 1/2 tablespoonfuls of dough and roll into a circle. Roll cookies in sprinkles and place on ungreased non-stick baking sheets. If you’d like heart shaped-cookies, press tops of cookies to flatten slightly and with a toothpick, create an indent in the middle of the top to form the middle of top of the heart. With your fingers, shape bottom of cookie into a “V” shape. Cookies will expand a bit as they bake so you may wish to over exaggerate the heart shape so cookies will be clearly shaped once they are done baking.
Bake 13-15 minutes, or until edges have crisped and tops are fairly firm to the touch when pressed. Let cool on baking sheets for a few minutes, and then transfer to a wire rack to cool completely.