Preparation Steps

• Preheat oven to 375°F (190°C). Line baking sheets with parchment paper.
• In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
• Beat in the eggs one at a time, then stir in the vanilla extract.
• In a separate medium bowl, whisk together the flour, cocoa powder, baking soda, and salt.
• Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
• Stir in the Reese's Pieces candies and chocolate chips.
• Drop rounded tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart.
• Bake for 10-12 minutes, or until the edges are set and the centers are still slightly soft. Cookies will continue to cook on the baking sheet.
• Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.