Fireworks Blondies are a delightful treat that captures the spirit of celebration! This easy blondie recipe is not only a fantastic dessert for the 4th of July but also perfect for any festive occasion. These soft and chewy cookie bars shine with vibrant red, white, and blue M&Ms and sprinkles, making them a standout dessert. Whether you’re hosting a barbecue or looking for a sweet snack, Fireworks Blondies are sure to please everyone.

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Blondie Batter
- For Garnish
- How to Make Fireworks Blondies
- Step 1: Preheat the Oven
- Step 2: Prepare the Batter
- Step 3: Mix Dry Ingredients
- Step 4: Spread in Pan
- Step 5: Bake
- How to Serve Fireworks Blondies
- À la Mode
- Drizzled with Chocolate Sauce
- With Fresh Berries
- Topped with Whipped Cream
- As Party Favors
- Pairing with Coffee
- How to Perfect Fireworks Blondies
- Best Side Dishes for Fireworks Blondies
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Fireworks Blondies
- Reheating Fireworks Blondies
- Frequently Asked Questions
- Can I customize my Fireworks Blondies?
- How do I know when my Fireworks Blondies are done?
- What if I don’t have M&Ms?
- Can I make these gluten-free?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Quick and Easy: With just 15 minutes of prep time, you can whip up these delicious blondies in no time.
- Soft Texture: The combination of butter and brown sugar creates an irresistibly soft and chewy texture that everyone loves.
- Customizable: While this recipe features festive M&Ms, feel free to mix in your favorite add-ins like nuts or chocolate chips.
- Perfect for Sharing: Yielding 24 bars, these blondies are great for parties or gatherings where sharing is key.
- Kid-Friendly: Kids will love helping to make this fun and colorful dessert!
Tools and Preparation
Before diving into making Fireworks Blondies, gather your essential tools to ensure a smooth baking experience.
Essential Tools and Equipment
- Mixing bowl
- Stand or hand mixer
- Measuring cups
- Measuring spoons
- 9×13-inch baking pan
- Foil
- Cooking spray
Importance of Each Tool
- Stand or hand mixer: A mixer makes it easy to combine ingredients quickly and evenly, ensuring a smooth batter.
- 9×13-inch baking pan: This size is ideal for evenly baking blondies so they come out perfectly chewy.
Ingredients
Fireworks Blondies – this EASY blondie recipe is the BEST EVER COOKIE BAR! It’s so soft and perfect with any additions, but especially with 4th of July M&Ms and sprinkles!
For the Blondie Batter
- ½ cup (113g) unsalted butter
- 2 cups (400g) packed brown sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ teaspoon salt
- 1 teaspoon baking powder
- 2 cups (248g) all purpose flour
For Garnish
- 2 cups red white, and blue M&Ms
- ½ cup patriotic sprinkles

How to Make Fireworks Blondies
Step 1: Preheat the Oven
Preheat your oven to 350°F. Line a 9×13” baking pan with foil, making sure to cover the sides well. Spray the foil-lined pan generously with cooking spray to prevent sticking.
Step 2: Prepare the Batter
In a mixing bowl, combine the unsalted butter and packed brown sugar. Use your stand or hand mixer to beat until crumbly. Next, add in the large eggs and vanilla extract, mixing until the mixture is smooth.
Step 3: Mix Dry Ingredients
Add in the salt, baking powder, and then gradually mix in the all-purpose flour. Stir until combined. Finally, gently fold in the red white, and blue M&Ms along with the patriotic sprinkles.
Step 4: Spread in Pan
Transfer the mixture into the prepared pan. Since the batter is wet, it’s easier to spray your hands with cooking spray before smoothing it into an even layer. If desired, sprinkle extra M&Ms on top for added decoration.
Step 5: Bake
Place your pan in the preheated oven and bake for approximately 22-25 minutes. Keep an eye on them as they bake; you want them to turn golden but still soft in the center. Remember that they will continue cooking slightly as they cool.
Now you’re ready to enjoy these incredible Fireworks Blondies!
How to Serve Fireworks Blondies
Fireworks Blondies are a delightful treat that can be enjoyed in various ways. Whether you’re hosting a gathering or just indulging in a sweet snack, here are some creative serving suggestions to elevate your blondie experience.
À la Mode
- Add a scoop of vanilla ice cream on top of a warm blondie for a rich and creamy dessert.
Drizzled with Chocolate Sauce
- Enhance the flavor by drizzling melted chocolate sauce over the blondies, adding a touch of indulgence.
With Fresh Berries
- Serve alongside fresh strawberries or blueberries for a refreshing contrast to the sweetness of the blondies.
Topped with Whipped Cream
- A dollop of whipped cream on top can add lightness and make each bite more enjoyable.
As Party Favors
- Cut them into smaller squares and package them in cute bags for guests to take home as sweet party favors.
Pairing with Coffee
- Enjoy your blondies with a hot cup of coffee or espresso for a delightful afternoon pick-me-up.
How to Perfect Fireworks Blondies
Perfecting your Fireworks Blondies is all about attention to detail. Here are some tips to ensure they turn out amazing every time.
- Use room temperature ingredients – This helps the butter and sugar blend better, resulting in a smoother batter.
- Don’t overmix the batter – Overmixing can lead to dense blondies. Mix just until combined for the best texture.
- Check for doneness – Since these blondies continue baking after being removed from the oven, look for a slight golden edge while keeping the center soft.
- Let them cool completely – Allowing blondies to cool fully before cutting helps them set and makes slicing easier.
- Experiment with mix-ins – Feel free to add nuts, chocolate chips, or dried fruit for different flavors and textures.
- Store properly – Keep leftovers in an airtight container at room temperature to maintain freshness.

Best Side Dishes for Fireworks Blondies
Pairing side dishes with your Fireworks Blondies can create a balanced dessert table. Here are some tasty options that complement their sweetness well.
- Fruit Salad – A mix of seasonal fruits provides a refreshing contrast and lightens up the dessert spread.
- Cheese Platter – Offer an assortment of cheeses which can provide a savory balance to the sweetness of blondies.
- Ice Cream Sundae Bar – Set up toppings like nuts, syrups, and sprinkles so guests can create their own sundaes alongside the blondies.
- Chocolate-Covered Strawberries – These add elegance and pair beautifully with the sweet flavors in blondies.
- Milkshakes – Creamy milkshakes in various flavors can enhance the dessert experience while keeping it fun.
- Coffee or Tea Service – Providing warm beverages encourages guests to linger and enjoy their treats even longer.
Common Mistakes to Avoid
Making Fireworks Blondies can be simple, but a few common mistakes can lead to less-than-perfect results. Here are some pitfalls to watch for:
- Using cold butter: Always use room temperature butter for a smooth batter. Cold butter can create lumps and affect the texture of your blondies.
- Overmixing the batter: Once you add the flour, mix just until combined. Overmixing can make the blondies tough instead of soft and chewy.
- Not measuring flour correctly: Use the spoon-and-level method for measuring flour to avoid dense blondies. Too much flour will dry them out.
- Skipping the parchment paper: Lining your pan with foil or parchment paper helps with easy removal. Skipping this step can lead to sticky blondies that are hard to cut.
- Ignoring baking time: Each oven is different; check the blondies a minute or two before the recommended time. Overbaking will lead to dry bars, while underbaking keeps them gooey and delicious.
Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Keep layers separated with parchment paper to prevent sticking.
Freezing Fireworks Blondies
- Wrap individual bars in plastic wrap and place in a freezer-safe container.
- They can be frozen for up to 3 months without losing flavor.
Reheating Fireworks Blondies
- Oven: Preheat at 350°F, place blondies on a baking sheet for about 10 minutes.
- Microwave: Heat individual bars on high for 15-20 seconds until warm.
- Stovetop: Place in a skillet over low heat, cover with a lid, and warm for about 5 minutes.

Frequently Asked Questions
Can I customize my Fireworks Blondies?
You can easily customize these blondies! Swap out M&Ms for chocolate chips or nuts to suit your taste.
How do I know when my Fireworks Blondies are done?
Look for a golden edge and a slightly soft center. A toothpick should come out with moist crumbs but not wet batter.
What if I don’t have M&Ms?
Feel free to use any colorful candies or even dried fruit! The key is adding fun textures and flavors while keeping it festive.
Can I make these gluten-free?
Yes! Substitute all-purpose flour with a gluten-free blend designed for baking. Make sure all other ingredients are gluten-free as well.
Final Thoughts
These Fireworks Blondies are not only super easy to make but also incredibly versatile! You can personalize them with your favorite mix-ins or toppings, making them perfect for any occasion. Whether it’s a summer celebration or just because, you’re sure to impress friends and family with this delightful treat. Give them a try—you won’t be disappointed!
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Fireworks Blondies
- Total Time: 40 minutes
- Yield: Approximately 24 servings 1x
Description
Fireworks Blondies are a festive and delicious treat that captures the essence of celebration! Perfect for summer gatherings or any special occasion, these soft and chewy cookie bars are studded with vibrant red, white, and blue M&Ms and topped with colorful sprinkles. With just 15 minutes of prep time, they are an easy dessert option that will wow your guests. Whether served warm with ice cream or as a fun party favor, these blondies are sure to become a favorite among friends and family!
Ingredients
- ½ cup unsalted butter
- 2 cups packed brown sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ teaspoon salt
- 1 teaspoon baking powder
- 2 cups all-purpose flour
- 2 cups red, white, and blue M&Ms
- ½ cup patriotic sprinkles
Instructions
- Preheat your oven to 350°F. Line a 9×13-inch baking pan with foil and spray generously with cooking spray.
- In a mixing bowl, beat together the unsalted butter and brown sugar until crumbly. Add in the eggs and vanilla extract; mix until smooth.
- Gradually incorporate salt, baking powder, and flour until combined. Gently fold in M&Ms and sprinkles.
- Spread the batter evenly in the prepared pan. Optionally, top with extra M&Ms.
- Bake for 22-25 minutes until golden around the edges but still soft in the center.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 180
- Sugar: 18g
- Sodium: 100mg
- Fat: 8g
- Saturated Fat: 5g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 27g
- Fiber: 0g
- Protein: 2g
- Cholesterol: 30mg