01 -
Preheat your oven to 350°F (175°C) and line two baking trays with parchment paper.
02 -
In a large bowl, cream together the softened butter and brown sugar until light and fluffy. Beat in the egg and vanilla extract until fully combined.
03 -
In another bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt.
04 -
Gradually mix the dry ingredients into the butter mixture until just combined.
05 -
Fold in the Reese’s Pieces candies.
06 -
Scoop the dough into ¼ cup-sized balls and place extra Reese’s Pieces on top of each.
07 -
Arrange the dough balls on the prepared baking trays, leaving about 2 inches between each.
08 -
Bake for 10-12 minutes. Let the cookies cool on the baking trays for 5 minutes before transferring them to a wire rack to cool completely.