Birthday Cake Brownies

Birthday Cake Oreo Brownies…does it get any better? I don’t think so! These brownies are semi-homemade and packed with all the best flavors. All you need is a boxed brownie mix, Birthday Cake Oreos, vanilla frosting, and rainbow sprinkles. Honestly, I would add rainbow sprinkles to any dessert if I could, so I am ALL IN for these.

Birthday Cake Brownies

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• Author: Taryn Camp

Ingredients

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For the brownies:

• One box of fudge brownie mix + the ingredients listed on the box
• 16 birthday cake Oreos
• Vanilla frosting: store-bought or my homemade recipe below
• Rainbow sprinkles

Vanilla buttercream

• 1 stick of salted butter
• 2 cups powdered sugar
• 2 tbsp heavy cream
• 1 tsp vanilla extract

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Instructions

1. Preheat the oven to the time it says on the box, usually 325 or 350.
2. Spray an 8” square baking dish with baking spray and line it with parchment paper. It’ll be way easier to pull out!
3. Make the brownies according to the package instructions. Spread half of the batter into the base of the dish.
4. Top that layer with 16 Oreos, placing them 4 × 4.
5. Spread the rest of the batter evenly over the Oreos. If desired add rainbow sprinkles to the top of the batter. Bake according to the package instructions.
6. Let the brownies cool completely. For fudgier brownies, stick them in the fridge for a few hours!
7. If you’re using store-bought frosting, spread a layer on top of the brownies and add a generous amount of rainbow sprinkles.
8. To make homemade buttercream, beat the butter until smooth. Add in the powdered sugar and mix. Add in the vanilla and heavy cream and mix until smooth.
9. Spread evenly on top of the brownies and then add a ton of sprinkles. Cut them into rectangles or squares and serve

I’ve made Oreo brownies countless times, but the Birthday Cake Oreos take them to a whole new level. They add a delicious extra layer of sweetness pairs perfectly with the fudgy brownies. I went with vanilla frosting, but chocolate would be amazing too. If you’re short on time, store-bought frosting works just fine, but trust me, homemade vanilla buttercream is next-level. The combo of chocolate brownies, vanilla buttercream, and sprinkles is simply irresistible.

One thing I’ve learned from making desserts is that not everyone loves traditional birthday cake. Some people want more frosting, some less, and some just prefer another dessert all together! These brownies are a perfect solution imo. You can skip the frosting or serve it on the side for everyone to choose from. It’d be fun to offer both chocolate and vanilla frosting options and let everyone go wild with sprinkles.

Confession…I have no idea what I preferred growing up. I can’t remember even one birthday cake that I had. If I had to choose now that I am in my 40’s, I would go back in time and have a whole dessert table. Brownies, cake, cookies, let’s do it all.

I’ll share another variation soon, but here’s a hot tip: you can customize these for any time of the year. Try classic Oreos with cookies and cream frosting, peppermint Oreos with chocolate candy cane frosting, or Golden Oreos with cookie butter frosting. Each one is a total game-changer!