Ingredients:

  • 1/2 cup (115g) unsalted butter, softened
  • 1/2 cup (100g) white granulated sugar
  • 1/2 cup (115g) packed brown sugar
  • 1 large egg (50g)
  • 1 tsp (5ml) vanilla extract
  • 1 1/4 cups (160g) all-purpose flour
  • 2 tbsp (15g) cornstarch
  • 3 tbsp (20g) unsweetened cocoa powder
  • 1/2 tsp (3g) baking soda
  • 1/4 tsp (1.5g) salt
  • 1 cup (170g) semi-sweet chocolate chips

Instructions:

  1. Preheat your oven to 350°F (175°C).
  2. In a large bowl, cream together the softened butter, white granulated sugar, and packed brown sugar until the mixture is pale and fluffy.
  3. Beat in the egg and vanilla extract until fully incorporated and smooth.
  4. Sift in the all-purpose flour, cornstarch, unsweetened cocoa powder, baking soda, and salt.
  5. Stir with a spatula until just combined; do not overmix to ensure the cookies remain chewy.
  6. Fold in the semi-sweet chocolate chips until evenly distributed throughout the batter.
  7. Scoop rounded tablespoons of dough onto parchment-lined baking sheets, spacing them 2 inches apart.
  8. Bake for 9–11 minutes. Remove from the oven when the edges are set and matte, but the centers still look slightly underbaked and soft.
  9. Allow cookies to firm up on the hot pan before transferring to a cooling rack.