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OREO O's® Confetti Bars

Prep Time: 20 mins
Total Time: 1 hr 15 mins


  • 1 cup butter melted
  • 1 ¼ cup sugar
  • ½ cup light brown sugar tightly packed
  • 2 eggs + 1 egg yolk room temperature preferred
  • 2 teaspoons vanilla extract
  • 2 ½ cups all purpose flour
  • 2 teaspoons cornstarch
  • ½ teaspoon baking powder
  • 1 teaspoon salt
  • Enough OREO® cookies to full the bottom of the pan
  • OREO O's® cereal
  • Colored sprinkles


  • 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 OREO O's® cereal and sprinkles.
  • Spread half of the batter evenly into prepared pan. Line OREO® cookies in an even layer over the batter.​
  • Add remaining batter by large spoonfuls over the cookies and use a spatula or knife to evenly spread.
  • Bake on 350F (177C) for 35-40 minutes -- until edges just begin to turn golden brown.
  • Allow to cool before cutting and serving.