Ingredients:

  • 1 cup (227g) unsalted butter, melted
  • 1 cup (200g) granulated sugar
  • ½ cup (100g) packed light brown sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ¾ cup (90g) all-purpose flour, spooned and leveled
  • ½ cup (45g) unsweetened cocoa powder
  • ½ teaspoon baking powder
  • ¼ teaspoon salt
  • 1 ½ cups (180g) all-purpose flour
  • ½ cup (115g) unsalted butter, softened
  • ½ cup (100g) granulated sugar
  • ¼ cup (50g) packed light brown sugar
  • 2 tablespoons milk
  • 1 teaspoon vanilla extract
  • Pinch of salt
  • 18 Oreo cookies, crushed

Instructions:

  1. Preheat oven to 350°F (175°C). Grease and line a 9x13 inch pan with parchment paper, leaving an overhang.
  2. In a large bowl, whisk together melted butter, granulated sugar, and brown sugar until well combined. Beat in eggs one at a time, then stir in vanilla extract.
  3. In a separate bowl, whisk together flour, cocoa powder, baking powder, and salt.
  4. Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
  5. Pour batter into the prepared pan and spread evenly. Bake for 25-30 minutes, or until a toothpick inserted near the center comes out with fudgy crumbs attached. Let cool completely in the pan.
  6. Place the flour for the edible cookie dough in a microwave-safe bowl. Microwave on high in 30-second intervals, stirring between each interval, until the internal temperature reaches 165°F (74°C). Let cool completely.
  7. In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
  8. Beat in milk and vanilla extract. Gradually add the heat-treated flour and salt, mixing until just combined.
  9. Gently fold in the crushed Oreo cookies.
  10. Spread the Oreo cookie dough evenly over the cooled fudgy base.
  11. Refrigerate for at least 15 minutes to allow the cookie dough to set slightly. Cut into bars and serve.