Print

Birthday Oreo Blondies Recipe

4.1 from 51 reviews

These Birthday Oreo Blondies are a festive and delicious treat perfect for any celebration. Combining a buttery blondie base with chunks of Golden Oreos and vibrant rainbow sprinkles, they offer a delightful mix of flavors and textures. Easy to bake in under 35 minutes, they make a perfect dessert to share with friends and family.

Ingredients

Scale

Blondie Batter

  • 3/4 cup unsalted butter (melted)
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar (packed)
  • 1 large egg (room temperature)
  • 1 large egg yolk (room temperature)
  • 1 teaspoon vanilla extract
  • 1 3/4 cups all-purpose flour
  • 3/4 teaspoon baking powder
  • 1 teaspoon corn starch
  • 1/2 teaspoon salt

Mix-ins and Topping

  • 1014 Golden Oreos (roughly chopped, divided)
  • 1/4 cup rainbow sprinkles (plus extra for garnish)

Instructions

  1. Preheat and Prepare Pan: Preheat your oven to 350°F (175°C). Line an 8×8 or 9×9 inch baking pan with parchment paper and spray it lightly with cooking spray. Set aside.
  2. Combine Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, corn starch, fine Oreo crumbs (if using, can be made by crushing some Oreos into powder), and salt. Set this mixture aside for later.
  3. Cream Butter and Sugars: Using a stand mixer or hand mixer, beat the melted butter with granulated and brown sugars on high speed for 2 minutes until the mixture is light and fluffy. This process helps create a tender texture in the blondies.
  4. Add Eggs and Vanilla: Add the whole egg and egg yolk one at a time to the butter and sugar mixture. Beat on medium speed after each addition and scrape down the sides and bottom of the bowl to ensure even mixing. Add the vanilla extract and mix on low speed just to combine.
  5. Incorporate Dry Ingredients: Gradually add all the dry ingredients to the wet ingredients. Mix on low speed just until they come together to avoid overmixing, which can lead to tough blondies.
  6. Add Mix-ins: Fold in about half of the chopped Golden Oreos and the 1/4 cup of rainbow sprinkles using a rubber spatula, making sure they’re evenly distributed throughout the batter.
  7. Transfer to Pan and Garnish: Pour the batter into the prepared pan and smooth the top with a spatula. Press the remaining chopped Golden Oreos onto the surface along with additional rainbow sprinkles to decorate.
  8. Bake: Bake in the preheated oven for 25 to 30 minutes, or until the blondies are set in the center and the edges turn a very light golden brown. A toothpick inserted into the center should come out clean. This usually takes about 28 minutes.
  9. Cool and Serve: Allow the blondies to cool completely in the pan on a wire rack before slicing into 16 squares. Serve and enjoy your festive Birthday Oreo Blondies!

Notes

  • For best texture, use room temperature eggs to ensure the batter mixes smoothly.
  • If you don’t have Golden Oreos, regular Oreos can be used for a different flavor twist.
  • Pressing Oreos and sprinkles on top before baking adds an appealing decorative touch.
  • Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
  • For a gooier blondie, reduce baking time by a few minutes, but make sure the edges remain golden.

Keywords: Birthday blondies, Golden Oreos, Oreo blondies, sprinkles blondies, easy dessert, party dessert, blondie recipe