Birthday Brownies with White Vanilla Frosting and Sprinkles

These Birthday Brownies with White Vanilla Frosting and Sprinkles are perfect for any celebration! The brownies are fudgy and dense, and the 3-ingredient vanilla buttercream frosting is super easy to make! 

Whoever said you have to have cake on your birthday hasn’t tried these brownies! These Birthday brownies are so delicious with fluffy frosting and cute rainbow sprinkles!

Do you put sprinkles on before or after baking brownies?

You’ll want to bake your brownies and then wait for them to cool before icing them or adding sprinkles. Once your brownies are cooked, you can pop them in the refrigerator for 30 minutes to help them cool faster. Then you can top with icing and/or sprinkles.

What is the Best Boxed Brownie Mix?

We really like the Ghirardelli Brownie Mix! We used the extra fudge variety for this specific batch, but you can use any boxed brownie mix!

7 Hacks to Make Make Box Brownies Better

While we love homemade brownies, sometimes we’re short on time and just want something easy! There are a few ways to make boxed brownies taste better (even like homemade!) without a whole lot of time or money!

1. Add a teaspoon of vanilla extract to the brownie batter
2. Add 1/2 cup of chopped nuts
3. Add 1/2 to 3/4 cups chocolate Chips, candy, or cookies to the batter
4. Use 1/2 cup melted unsalted butter instead of the recommended oil for a richer chocolate flavor 
5. Use 1/3 cup buttermilk or whole milk instead of water
6. Add in 1/4 cup cocoa powder for a more chocolate-y brownie
7. Bake the brownies on a lower temperature for a longer period of time. We like 325 degrees for about 40 minutes in a glass 8×8 inch pan. 

How to Cut Brownies Cleanly

Since these birthday brownies have white icing, it’s important to know how to cut them cleanly. You’ll want to let the brownies completely cool then top with icing and sprinkles. After you’ve topped with sprinkles, you’re ready to take a 8″ chef knife out to cut them. After each cut, wipe your knife completely clean. Repeat until all of the brownies are cut.

How to Make Birthday Brownies with White Vanilla Frosting and Sprinkles

1. Bake your brownies according to the box — adding in any of the brownie hacks above.
2. Let the brownies cool for 30 minutes (preferably in the refrigerator).
3. Top the brownies with icing and sprinkles. We like to press the sprinkles in a bit to keep them from falling off.
4. Enjoy!

You may also like:

• Easy Raspberry Thumbprint Cookies with Nuts Recipe
• How to Do a Fun Virtual Movie Night with Friends
• 25 Creative Stay At Home Date Ideas for Couples

Continue to Content

Yield: 9

Birthday Brownies with White Vanilla Frosting and Sprinkles

Print

These Birthday Brownies with White Vanilla Frosting and Sprinkles are perfect for any celebration! The brownies are fudgy and dense, and the 3-ingredient vanilla buttercream frosting is super easy to make!

Prep Time 5 minutes

Cook Time 40 minutes

Additional Time 30 minutes

Total Time 1 hour 15 minutes

Ingredients

• Boxed Brownie Mix of Your Choice
• 1/2 cup unsalted butter, melted
• 1 egg
• 1/4 cup milk
• 1 teaspoon vanilla

For Icing

• 1/2 cup unsalted butter, softened
• 2 cups confectioners' sugar, sifted
• 2 teaspoons vanilla extract
• 2 tablespoons milk (if needed for consistency)

Instructions

1. Spray a pan with non-stick spray and turn on your oven to the degrees stated on your brownie box.
2. Mix the egg, butter, milk, and vanilla together. Then, add in your brownie mix.
3. Bake the brownie mixture based on the box's directions.
4. Let the brownies cool for at least 30 minutes in the refrigerator.
5. Start to make your icing by mixing the softened butter on high for 2 minutes or until creamy.
6. Add in your vanilla and confectioners' sugar. Mix on low to start and go up to high as the sugar mixes in. Mix until creamy.
7. If the frosting is too thick, add a tablespoon of milk and mix. If it's too thick still, add in the other tablespoon. If it gets runny, add more confectioners' sugar.

Notes

You can also mix in your favorites to the brownie batter before cooking!

• Add 1/2 cup of chopped nuts
• Add 1/2 to 3/4 cups chocolate chips, candy, or cookies to the batter
• Add in 1/4 cup cocoa powder for a more chocolate-y brownie

When you go to cut the brownies, make sure to wipe your knife after each cut to keep the brownies from lifting up in to the frosting.

Nutrition Information:

Yield:

9

Serving Size:

1
Amount Per Serving: Calories: 306Total Fat: 22gSaturated Fat: 13gTrans Fat: 0gUnsaturated Fat: 7gCholesterol: 76mgSodium: 25mgCarbohydrates: 27gNet Carbohydrates: 27gFiber: 0gSugar: 24gProtein: 1g

Nutrition information isn’t always accurate.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Instagram

Get Our Best Morning Routine Checklist!

Get More Simple Life Hacks on Our Podcast!

We have a blast on our podcast,The Kim and Kalee Show, every week! Join us for fun, simple tips to improve every aspect of your life!