Why You’ll Love This Recipe
If you’re looking for the ultimate indulgent dessert that’s quick, easy, and packed with flavor, these Birthday Cake Oreo Fudge Brownies are perfect for you. They combine rich, fudgy brownies with creamy, festive birthday cake Oreos and a decadent layer of chocolate fudge. Perfect for celebrations, potlucks, or simply satisfying your sweet tooth, this recipe is a dream for anyone who loves a mix of chocolate, cookies, and birthday cake flavors.

Ingredients
For the brownies:
- 1 box fudge brownie mix (or homemade brownie batter)
- Eggs, oil, and water (as directed on the brownie mix box)
- 10–12 Birthday Cake Oreo cookies, roughly chopped
For the fudge layer:
- 1 can (14 oz) sweetened condensed milk
- 1 ½ cups semi-sweet chocolate chips
- 1 teaspoon vanilla extract
For topping (optional but recommended):
- 4–5 additional Birthday Cake Oreo cookies, crushed
- Sprinkles (for a fun birthday cake effect)
Instructions
Step 1: Prepare the Brownie Batter
- Preheat your oven to 350°F (175°C). Grease or line an 8×8-inch baking pan with parchment paper.
- Prepare the brownie batter according to the instructions on the box (or your homemade recipe).
- Fold in the chopped Birthday Cake Oreos and mix gently.
Step 2: Bake the Brownies
- Pour the brownie batter into the prepared pan and spread it evenly.
- Bake for about 25–30 minutes, or until a toothpick inserted in the center comes out with only a few moist crumbs.
- Remove from the oven and let it cool slightly.
Step 3: Make the Fudge Layer
- In a microwave-safe bowl, combine the sweetened condensed milk and chocolate chips. Microwave in 30-second intervals, stirring after each, until smooth.
- Stir in the vanilla extract.
Step 4: Assemble and Chill
- Pour the chocolate fudge mixture over the slightly cooled brownies, spreading it evenly.
- Sprinkle crushed Oreos and sprinkles on top for a festive touch.
- Let the brownies chill in the refrigerator for at least 1 hour to set.
Step 5: Slice and Serve
- Once firm, remove the brownies from the pan and cut them into squares.
- Enjoy the rich, chocolatey, and fun birthday cake flavors in every bite!
Variations
- Use Different Oreos: Swap out Birthday Cake Oreos for Golden Oreos, Double Stuf, or your favorite variety.
- Add White Chocolate Chips: Stir in white chocolate chips for extra sweetness.
- Drizzle with Caramel: Enhance the flavor with a caramel drizzle before serving.
- Use a Different Fudge Layer: Try peanut butter fudge instead of chocolate for a unique twist.
Servings and Timing
- Servings: 12–16 brownies
- Prep Time: 10 minutes
- Bake Time: 25–30 minutes
- Chill Time: 1 hour
- Total Time: About 1 hour 45 minutes
Storage and Reheating
- Refrigerator: Store brownies in an airtight container for up to 5 days.
- Freezer: Freeze for up to 3 months. Let them thaw at room temperature before serving.
- Reheating: These brownies are best enjoyed at room temperature or slightly warmed in the microwave for 10–15 seconds.
Frequently Asked Questions
How can I make these brownies even more fudgy?
Use an extra egg and replace the water with milk for a richer, denser brownie texture.
Can I make these brownies without using a box mix?
Yes! Use your favorite homemade brownie recipe and fold in the Oreos before baking.
Can I add frosting to these brownies?
Absolutely! A layer of vanilla buttercream or cream cheese frosting would complement the birthday cake flavor perfectly.
What’s the best way to cut these brownies neatly?
Use a sharp knife, run it under hot water, and wipe it clean between cuts for smooth edges.
Can I make these brownies gluten-free?
Yes! Use a gluten-free brownie mix and gluten-free sandwich cookies.
How can I make these brownies more festive?
Add extra sprinkles, drizzle white chocolate, or even top with whipped cream when serving.
Do I have to refrigerate these brownies?
No, but chilling them helps the fudge set. They can also be stored at room temperature in an airtight container.
Can I use different types of chocolate for the fudge layer?
Yes! Try milk chocolate, dark chocolate, or even a combination for a different flavor.
How long should I wait before cutting the brownies?
Let them chill for at least 1 hour to ensure the fudge layer is firm and easy to slice.
Can I double this recipe for a larger batch?
Yes! Simply double the ingredients and use a 9×13-inch pan. Adjust baking time accordingly.
Conclusion
These Birthday Cake Oreo Fudge Brownies are a quick, delicious, and festive treat perfect for any occasion. Whether you’re celebrating a birthday, hosting a party, or just craving a decadent dessert, this recipe delivers the perfect combination of fudgy brownies, creamy Oreos, and rich chocolate fudge. Try them out and enjoy every gooey, chocolatey bite!
PrintFast Birthday Cake Oreo Fudge Brownies Recipe
- Total Time: About 1 hour 45 minutes
- Yield: 12–16 brownies 1x
Description
Indulge in these easy Birthday Cake Oreo Fudge Brownies! Rich, fudgy brownies layered with festive Birthday Cake Oreos and decadent chocolate fudge—perfect for celebrations and sweet cravings. Ready in under 2 hours!
Ingredients
For the brownies:
- 1 box fudge brownie mix (or homemade brownie batter)
- Eggs, oil, and water (as directed on the brownie mix box)
- 10–12 Birthday Cake Oreo cookies, roughly chopped
For the fudge layer:
- 1 can (14 oz) sweetened condensed milk
- 1 ½ cups semi-sweet chocolate chips
- 1 teaspoon vanilla extract
For topping (optional but recommended):
- 4–5 additional Birthday Cake Oreo cookies, crushed
- Sprinkles (for a fun birthday cake effect)
Instructions
Step 1: Prepare the Brownie Batter
- Preheat oven to 350°F (175°C). Grease or line an 8×8-inch baking pan with parchment paper.
- Prepare brownie batter according to box instructions (or use a homemade recipe).
- Fold in chopped Birthday Cake Oreos and mix gently.
Step 2: Bake the Brownies
- Pour the batter into the prepared pan and spread evenly.
- Bake for 25–30 minutes, or until a toothpick inserted in the center comes out with only a few moist crumbs.
- Remove from oven and let cool slightly.
Step 3: Make the Fudge Layer
- In a microwave-safe bowl, combine sweetened condensed milk and chocolate chips.
- Microwave in 30-second intervals, stirring until smooth.
- Stir in vanilla extract.
Step 4: Assemble and Chill
- Pour fudge mixture over slightly cooled brownies, spreading evenly.
- Sprinkle crushed Oreos and sprinkles on top.
- Refrigerate for at least 1 hour to set.
Step 5: Slice and Serve
- Once firm, remove brownies from the pan and cut into squares.
- Enjoy the rich, chocolatey, birthday cake-inspired treat!
Notes
- Storage: Store in an airtight container in the refrigerator for up to 5 days.
- Freezing: Freeze for up to 3 months; thaw at room temperature before serving.
- Reheating: Warm in the microwave for 10–15 seconds for a fresh-baked taste.
- Cutting Tip: Use a sharp knife, run it under hot water, and wipe clean between cuts for neat slices.
- Prep Time: 10 minutes
- chill time: 1 hour
- Cook Time: 25-30 minutes
- Category: dessert
- Method: Baking
- Cuisine: American
Keywords: Birthday Cake Oreo Brownies, Fudge Brownies, Oreo Brownies, Chocolate Dessert, Easy Brownie Recipe