Ingredients:

  • 1 ¾ cups (220g) all-purpose flour
  • 1 tsp (3g) cornstarch
  • 1 tsp (5g) baking soda
  • ½ tsp (3g) sea salt
  • ½ cup (115g) unsalted butter, softened
  • ½ cup (125g) creamy peanut butter
  • ¾ cup (150g) light brown sugar, packed
  • ¼ cup (50g) granulated white sugar
  • 1 large egg, room temperature
  • 1 tsp (5ml) vanilla extract
  • 1 cup (150g) Reese’s Peanut Butter Cups, chopped
  • ½ cup (90g) Reese’s Pieces
  • ½ cup (85g) semi-sweet chocolate chips

Instructions:

  1. Whisk the 1 ¾ cups flour, 1 tsp cornstarch, 1 tsp baking soda, and ½ tsp sea salt in a medium bowl.
  2. Cream the ½ cup softened butter, ½ cup creamy peanut butter, ¾ cup brown sugar, and ¼ cup white sugar in a large bowl. Beat for 3 minutes until pale and fluffy.
  3. Add the 1 large egg and 1 tsp vanilla extract to the creamed mixture. Scrape the sides of the bowl to make sure everything is fully incorporated.
  4. Switch your mixer to low and slowly add the dry ingredients to the wet. Mix only until the last streak of flour disappears.
  5. Fold in the 1 cup chopped Reese’s Cups, ½ cup Reese’s Pieces, and ½ cup chocolate chips using a spatula.
  6. Scoop 2 tablespoon mounds of dough onto a parchment lined tray and chill in the fridge for at least 30 minutes. Wait until the dough feels firm to the touch.
  7. Preheat your oven to 350°F (180°C) while the dough chills.
  8. Space the chilled dough balls 2 inches apart on a baking sheet. Bake 9 to 11 minutes until the edges are golden and the tops look slightly underdone.
  9. Remove from the oven and let them sit on the hot pan for 5 minutes.
  10. Transfer to a wire rack to cool completely. Wait until they are cool to experience the full shattering texture of the Reese's Pieces.