Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper. In a mixing bowl, combine flour, cocoa powder, baking powder, and salt.

In a separate bowl, cream softened butter and granulated sugar together until light and fluffy, about 2-3 minutes. Add egg and vanilla extract, mixing until fully incorporated.

Gradually incorporate the dry mixture into the wet mixture.

Shape dough into small spheres about the size of a tablespoon and roll in pastel sprinkles before placing on the prepared baking sheet.

Bake for 10 minutes until slightly underbaked. Immediately press a Hershey’s Kiss into the center of each warm cookie after removing from the oven.

Let cookies rest for a few minutes before transferring to a wire rack to cool completely.