Ingredients

The following ingredients have 24 Servings
  • 1 cup butter, melted ((226g))
  • 1 ¼ cup sugar ((250g))
  • ½ cup light brown sugar tightly packed ((100g))
  • 2 eggs + 1 egg yolk room temperature preferred
  • 2 teaspoon vanilla extract
  • 2 ½ cups all purpose flour 285g
  • 2 teaspoons cornstarch
  • ½ teaspoon baking powder
  • 1 teaspoon salt
  • ½ cup mini semisweet chocolate chips ((85g))
  • 16 + 5 Oreo cookies
  • ¼ cup colored sprinkles

Instruction

  • Preheat oven to 350F (177C) and prepare a 9x9 pan by lining with parchment paper (or lightly grease and flour).
  • Combine melted butter and sugars in a large bowl, stir well.
  • Add eggs, and egg yolk one at a time, stirring well after each addition.
  • Stir in vanilla extract.
  • In a separate, medium-sized bowl, whisk together flour, cornstarch, baking powder, and salt.
  • Gradually stir dry ingredients into wet until completely combined. Stir in chocolate chips and then sprinkles.
  • Spread half of the batter evenly into prepared pan. Firmly press 16 Oreo cookies in an even layer over the batter.
  • Drop remaining batter by large spoonfuls over the cookies and use a spatula or knife to evenly spread over the cookies.
  • Gently break 5 remaining Oreos into pieces and press firmly into the top of the batter, if desired.
  • Bake on 350F (177C) for 35-40 minutes -- until edges just begin to turn golden brown and a toothpick inserted in the center comes out clean or with few moist crumbs.
  • Allow to cool before cutting and serving (don't cool too long, though -- these are amazing when served still slightly warm!)