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Fireworks Cupcakes

Fireworks cupcakes are tall, swirled vanilla buttercream cupcakes piped into a dramatic peak and decorated with red and blue star sprinkles for a 4th of July look. Finished with sparkler or flag picks, they’re an easy patriotic dessert with a showy firework-burst vibe.
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Prep Time 30 minutes
Cook Time 20 minutes
Total Time 50 minutes
Servings: 24 servings
Course: Dessert
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

Vanilla cupcakes (from cake mix)
  • 1 box white or vanilla cake mix Use the additional ingredients listed on the box (typically eggs, oil, and water), and follow the stated bake temperature and timing.
Vanilla buttercream
  • 1 cup unsalted butter, softened
  • 4 cup powdered sugar
  • 2 tsp vanilla extract
  • 4 tbsp heavy cream Start with 3 tbsp, then add more until the frosting is thick but pipeable.
  • 1 red and blue gel food coloring
  • 0.5 cup red, white, and blue star sprinkles
  • 24 count sparkler picks or flag picks for decoration

Equipment

  • 1 stand mixer
  • 1 sheet pan

Method
 

Bake and cool cupcakes
  1. Bake cupcakes according to package directions in lined muffin tins, using the required cake-mix ingredients listed on the box. Cool completely on a wire rack until no warmth remains.
Make vanilla buttercream
  1. Beat softened butter until fluffy, about 1 to 2 minutes, to create a smooth base for the frosting.
  2. Gradually add powdered sugar while mixing on low, then scrape down the bowl to prevent lumps.
  3. Add vanilla extract and 3 tablespoons heavy cream, then mix until smooth and thick.
  4. Beat on high for 3 minutes until very light and fluffy, adding more heavy cream (1 to 4 teaspoons at a time) only if needed for pipeable texture.
Color, pipe, and decorate
  1. Divide buttercream into three portions: leave one white, color one red, and color one blue with gel food coloring.
  2. Load a piping bag fitted with a large star tip with all three colors side by side for a tri-color swirl.
  3. Pipe a tall swirled peak of frosting onto each cooled cupcake, forming a dramatic upward shape.
  4. Shower each cupcake with red, white, and blue star sprinkles so they cascade over the peak while the frosting is fresh.
  5. Insert a sparkler pick into the center of each cupcake, pushing it down gently so it stands upright like a firework burst.
  6. Serve immediately so the sprinkles stay put and the pick remains centered in the frosting peak.

Notes

For the cleanest tall swirls, make sure the cupcakes are fully cooled before piping and beat the buttercream until it looks very light and fluffy (about the full 3-minute high-speed window). Store cupcakes in an airtight container in the refrigerator for up to 3 days; let them sit at room temperature for 15 to 20 minutes before serving for easier cutting. Freezing is best done before decorating; thaw baked cupcakes fully, then make fresh buttercream. For a lighter option, you can swap part of the heavy cream for additional softened butter to keep the frosting rich but slightly less soft.