Name: Birthday Cake Blondies
Prep time: 5 min
Cook time: 35 min
Total time: 40 min
Cuisine: American
Ingredients: 1 (15 oz) box yellow cake mix; ¼ cup vegetable oil; 3 tablespoons whole milk; 1 large egg; 1 tablespoon vanilla extract; ½ cup rainbow sprinkles

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These Birthday Cake Blondies are a fun and festive treat that’s perfect for any celebration! Made with a yellow cake mix and loaded with colorful rainbow sprinkles, these blondies are sweet, soft, and bursting with joy. Whether it’s a birthday or just a moment to indulge in something fun, these blondies are sure to be a hit!

Why You’ll Love This Recipe

These blondies are incredibly easy to make with just a few simple ingredients, including a box of yellow cake mix. The batter is thick and rich, and the sprinkles add a pop of color and sweetness in every bite. With a soft, chewy texture and a vanilla cake flavor, they’re perfect for any occasion that calls for something sweet and colorful. Plus, they’re ready in just 40 minutes, making them a quick and delicious dessert everyone will love! Birthday Cake Blondies

Ingredients

1 (15 oz) box yellow cake mix
¼ cup vegetable oil
3 tablespoons whole milk
1 large egg
1 tablespoon vanilla extract
½ cup rainbow sprinkles

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

Directions

1. Preheat the Oven:

Preheat your oven to 350°F (175°C).
Grease a 9×9-inch baking pan or line it with parchment paper for easy removal of the blondies.

2. Mix the Batter:

In a mixing bowl, combine the cake mix, vegetable oil, milk, egg, and vanilla extract. Stir until well blended. The batter will be thick.

3. Add the Sprinkles:

Fold in the rainbow sprinkles, ensuring they are evenly distributed throughout the batter.

4. Spread the Batter:

Spread the batter evenly into the prepared baking pan, using a rubber spatula to smooth the top.

5. Bake:

Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean.

6. Cool and Serve:

Let the blondies cool for at least a couple of hours before cutting into squares for the best results. Enjoy!

Servings and Timing

Prep Time: 5 minutes
Cook Time: 35 minutes
Total Time: 40 minutes
Servings: 9

Variations

Frosted Blondies: Add a layer of frosting on top to make these even more festive! Use vanilla or buttercream frosting and top with additional sprinkles.
Chocolate Chips: For a chocolatey twist, add ½ cup of mini chocolate chips along with the sprinkles.
Different Sprinkles: You can swap rainbow sprinkles for other colored sprinkles based on the occasion (e.g., red and green for Christmas or pastel sprinkles for Easter).

Storage/Reheating

Storage: Store leftover blondies in an airtight container at room temperature for up to 3 days.
Reheating: Reheat the blondies in the microwave for a few seconds to soften them before serving, if desired.

FAQs

Can I make these blondies in a different pan size?

If you use a different pan size, you may need to adjust the baking time. A smaller pan will require a longer bake time, while a larger pan may need less time.

Can I make these blondies ahead of time?

Yes, these blondies can be made ahead of time. Just let them cool completely and store them in an airtight container until ready to serve.

Can I use a different flavor cake mix?

Absolutely! You can substitute the yellow cake mix with white, chocolate, or funfetti cake mix for a fun variation on the classic blondie recipe.

How do I know when the blondies are done?

The blondies are done when a toothpick inserted into the center comes out clean or with a few moist crumbs. If there’s wet batter on the toothpick, bake for a few more minutes and check again.

Can I freeze these blondies?

Yes, these blondies freeze well. After they have cooled completely, wrap them tightly in plastic wrap or place them in a freezer-safe container. They’ll stay fresh for up to 3 months. Thaw at room temperature before serving.

Conclusion

These Birthday Cake Blondies are the ultimate easy-to-make, celebration-ready treat! Soft, sweet, and full of colorful sprinkles, they’re the perfect way to add a festive touch to any occasion. With minimal effort and just a few ingredients, you can create a batch of delicious blondies that everyone will love. Whether for a birthday, holiday, or just because, these blondies will bring joy to any celebration!