What happens when you combine the rich, fudgy goodness of brownies, the nostalgic flavor of birthday cake, and the irresistible crunch of Oreo cookies? You get these Decadent Birthday Cake Oreo Fudge Brownies, a dessert that’s every chocolate and cookie lover's dream come true. These brownies are packed with chocolatey richness, layered with crushed Birthday Cake Oreos, and topped with colorful sprinkles for a festive touch. Whether it’s for a birthday celebration or just because, these brownies are guaranteed to impress. Keep reading for a step-by-step guide to making this crowd-pleasing treat!
What are Birthday Cake Oreo Fudge Brownies?
Birthday Cake Oreo Fudge Brownies are an over-the-top dessert that combines layers of fudgy brownies with crushed Birthday Cake Oreos (the ones with funfetti filling), all topped off with colorful sprinkles. These brownies have a rich, dense texture and are studded with chunks of Oreo cookies, giving you a delicious crunch in every bite. With the addition of birthday cake flavors, these brownies take a traditional fudgy dessert to the next level, making them perfect for celebrations or when you just want something fun and festive.
Ingredients List for Birthday Cake Oreo Fudge Brownies
For the Brownie Base:
- 1 cup unsalted butter (2 sticks)
- 8 oz semi-sweet chocolate, chopped (or 1 ½ cups chocolate chips)
- 1 ½ cups granulated sugar
- 4 large eggs
- 1 teaspoon vanilla extract
- 1 cup all-purpose flour
- ¼ cup unsweetened cocoa powder
- ½ teaspoon salt
For the Oreo Layer:
- 15 Birthday Cake Oreos, coarsely chopped (reserve a few whole for topping)
For the Topping:
- ¼ cup sprinkles (rainbow or any color of your choice)
- Extra Birthday Cake Oreos, broken into pieces for the top (optional)
Substitutions and Variations
- Brownie Mix Option:
If you're short on time, you can use a boxed brownie mix instead of making brownies from scratch. Prepare the mix as directed on the package and layer in the Oreos and sprinkles for a quick version of this recipe. - Different Oreo Flavors:
If you can’t find Birthday Cake Oreos, feel free to use classic Oreos, Golden Oreos, or any other flavor you like. Each will bring a unique twist to the brownies. - Add-ins:
For an extra indulgent treat, consider folding in white chocolate chips, chopped nuts, or even peanut butter chips into the brownie batter. - Frosting Option:
To make these brownies even more birthday-themed, top them with a layer of vanilla buttercream frosting before adding sprinkles and extra Oreos.
Step-by-Step Cooking Instructions

Step 1: Prepare the Brownie Base
- Preheat your oven to 350°F (175°C). Grease and line a 9x13-inch baking pan with parchment paper, leaving an overhang on the sides to easily lift out the brownies after baking.
- In a medium saucepan over low heat, melt the butter and chopped semi-sweet chocolate together, stirring constantly until smooth. Remove from heat and let the mixture cool slightly.
- In a large mixing bowl, whisk together the sugar, eggs, and vanilla extract until combined.
- Slowly whisk the melted chocolate mixture into the egg mixture until smooth.
- Sift in the flour, cocoa powder, and salt, and gently fold the dry ingredients into the wet ingredients until just combined. Be careful not to overmix.
Step 2: Layer the Oreos
- Gently fold in the coarsely chopped Birthday Cake Oreos into the brownie batter, being careful not to overmix, as you want chunks of Oreos throughout.
- Pour half of the brownie batter into the prepared baking pan and spread it evenly with a spatula.
- Layer additional chopped Oreos over the first half of the batter, then spread the remaining brownie batter on top, making sure the Oreo pieces are evenly distributed.
Step 3: Bake the Brownies
- Bake the brownies in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out with just a few moist crumbs.
- Remove the brownies from the oven and immediately sprinkle the top with extra Birthday Cake Oreo pieces (optional) and rainbow sprinkles.
- Let the brownies cool completely in the pan before lifting them out using the parchment paper overhang.
Step 4: Cut and Serve
- Once the brownies have cooled, slice them into squares or bars. You can cut them into small bite-sized pieces for serving at a party or into larger squares for more generous portions.
- For the ultimate indulgence, serve with a scoop of vanilla ice cream or a drizzle of chocolate syrup!
How to Cook Birthday Cake Oreo Fudge Brownies: A Step-by-Step Guide
To make these Birthday Cake Oreo Fudge Brownies, you’ll start by preparing a rich and fudgy brownie base. Melt butter and chocolate together for an ultra-chocolatey flavor, then mix in sugar, eggs, and dry ingredients for a classic brownie batter. Fold in chunks of Birthday Cake Oreos for extra texture and sweetness. After baking, the brownies are topped with more Oreos and colorful sprinkles, giving them a festive touch. Let them cool, slice, and enjoy!
Common Mistakes to Avoid
- Overbaking the Brownies:
Be sure to keep a close eye on your brownies as they bake. Overbaking will result in dry, crumbly brownies. Check for doneness by inserting a toothpick into the center—if it comes out with just a few moist crumbs, your brownies are ready. - Overmixing the Batter:
Overmixing the brownie batter after adding the flour can lead to dense, tough brownies. Stir just until the dry ingredients are incorporated to keep your brownies fudgy. - Not Letting the Brownies Cool Completely:
While it may be tempting to slice into the brownies while they’re still warm, it’s important to let them cool completely to allow the layers to set. This will also make it easier to cut clean squares.
Serving and Presentation Tips
How to Serve Birthday Cake Oreo Fudge Brownies
These brownies are rich and decadent, so they pair perfectly with a cold glass of milk or a scoop of ice cream. For an extra fun touch, serve them on a platter decorated with extra sprinkles or alongside other birthday-themed treats. If you want to make it a full-on birthday celebration, top each brownie square with a mini birthday candle!
Presentation Ideas for Birthday Cake Oreo Fudge Brownies
For a showstopping presentation, drizzle melted white or dark chocolate over the top of the brownies before adding the sprinkles. You can also stack the brownies into a pyramid on a cake stand and sprinkle extra Oreo crumbs or crushed sprinkles around them for a festive look. If serving at a party, wrap individual brownie squares in cellophane bags tied with colorful ribbons for an easy take-home treat.
Birthday Cake Oreo Fudge Brownie Recipe Tips
- Line Your Pan with Parchment Paper:
This makes it super easy to lift the brownies out of the pan after they’ve cooled, ensuring clean, neat cuts. - Refrigerate for Neater Slicing:
For perfect squares, refrigerate the brownies for 30 minutes before cutting. This will make them firmer and easier to slice. - Use Room Temperature Eggs:
Using room temperature eggs will help create a smoother batter and ensure even mixing.
Frequently Asked Questions (FAQs)
- Can I make these brownies ahead of time?
Absolutely! You can bake these brownies a day in advance and store them in an airtight container at room temperature. They will remain fudgy and delicious for up to 3 days. - How do I store leftover brownies?
Store any leftover brownies in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to 5 days. To freeze, wrap individual brownies tightly in plastic wrap and store them in a freezer-safe bag for up to 2 months. - Can I use different flavors of Oreos?
Definitely! While Birthday Cake Oreos add a fun and festive flavor, you can experiment with other Oreo varieties like Golden Oreos, Double Stuf, or even Peanut Butter Oreos for a unique twist. - Can I add frosting to these brownies?
Yes, for an extra indulgent treat, top the brownies with a layer of vanilla buttercream or cream cheese frosting before adding the sprinkles.
Conclusion
These Decadent Birthday Cake Oreo Fudge Brownies are the ultimate dessert for anyone who loves the combination of chocolate, Oreos, and birthday cake flavors. Whether you’re celebrating a special occasion or just indulging in a deliciously fun treat, these brownies are sure to impress. With their rich, fudgy texture, crunchy Oreo bits, and festive sprinkles, they’re as fun to make as they are to eat. Give this recipe a try and watch them disappear at your next gathering!
PrintDecadent Birthday Cake Oreo Fudge Brownies Recipe
This Decadent Birthday Cake Oreo Fudge Brownies recipe is a perfect celebration treat! With layers of rich, fudgy brownies, chunks of Birthday Cake Oreos, and a creamy, colorful frosting, these brownies are ideal for parties or satisfying your chocolate cravings. Easy to bake and loaded with Oreo goodness, these brownies will be a crowd favorite at any gathering!
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Total Time: 55 minutes
- Yield: 12 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- For the Brownies:
- 1 cup unsalted butter, melted
- 1 ½ cups granulated sugar
- ¾ cup cocoa powder
- 1 tsp vanilla extract
- 3 large eggs
- 1 cup all-purpose flour
- ½ tsp salt
- 12 Birthday Cake Oreos, chopped
- For the Frosting:
- ½ cup unsalted butter, softened
- 2 cups powdered sugar
- 2 tbsp milk
- 1 tsp vanilla extract
- ¼ cup sprinkles (for decorating)
- Extra Birthday Cake Oreos, crushed (for topping)
Instructions
- Preheat oven to 350°F (175°C) and grease a 9x9-inch baking pan.
- In a large bowl, whisk together melted butter and sugar until smooth. Add cocoa powder and mix well.
- Add eggs one at a time, followed by vanilla, and mix until fully combined.
- Stir in flour and salt until just combined. Fold in chopped Birthday Cake Oreos.
- Pour batter into the prepared pan and bake for 30-35 minutes, until a toothpick comes out clean. Cool completely.
- For the frosting: Beat softened butter until creamy. Gradually add powdered sugar and milk, beating until smooth. Mix in vanilla.
- Spread frosting over cooled brownies, then top with sprinkles and crushed Oreos.
- Cut into squares and serve!
Notes
- Let the brownies cool completely before frosting for best results.
- Use more or fewer Oreos in the batter to adjust the sweetness and texture.
- Store in an airtight container for up to 4 days.
Nutrition
- Serving Size: 1 brownie
- Calories: 450 kcal
- Sugar: 45g
- Sodium: 200mg
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