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Fireworks Cupcakes

Fireworks cupcakes are tall, swirled vanilla buttercream cupcakes topped with red and blue star sprinkles and sparkler picks for a 4th of July burst. Bake fluffy cupcakes, pipe a dramatic tri-color peak, then finish with shimmering sprinkles and a firework-style sparkler.
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Prep Time 30 minutes
Cook Time 20 minutes
Total Time 50 minutes
Servings: 24 servings
Course: Dessert
Cuisine: American
Calories: 310
Ingredients Equipment Method Notes

Ingredients
  

Cupcake base (cake mix + box ingredients)
  • 1 box white or vanilla cake mix Use the box package directions for water/eggs/oil as listed.
Vanilla buttercream
  • 1 cup unsalted butter Soften until spreadable.
  • 4 cup powdered sugar
  • 2 tsp vanilla extract
  • 3.5 tbsp heavy cream Start with 3 tbsp; add up to 4 tbsp for proper piping consistency.
  • 0.25 red and blue gel food coloring Use enough to make one red portion and one blue portion.
  • 1 red, white, and blue star sprinkles
  • 1 sparkler picks or flag picks for decoration

Equipment

  • 1 sheet pan

Method
 

Bake and cool
  1. Preheat the oven and bake cupcakes according to the cake mix package directions in lined muffin tins until a toothpick comes out clean.
  2. Cool the cupcakes completely on a wire rack before frosting so the buttercream stays tall and holds its swirl.
Make the buttercream
  1. Beat the softened unsalted butter until fluffy, then gradually add the powdered sugar while mixing to combine.
  2. Add the vanilla extract and heavy cream, then beat on high for 3 minutes until very light and fluffy.
Color and prepare tri-color piping
  1. Divide the 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 the three colors side by side for a tri-color swirl.
Pipe, sprinkle, and decorate
  1. Pipe a tall swirled peak of frosting onto each cooled cupcake using steady upward pressure.
  2. Shower each cupcake with red, white, and blue star sprinkles and insert a sparkler pick into the center, then serve.

Notes

For the tallest swirls, keep cupcakes fully cooled and pipe immediately after loading the piping bag. Store in the refrigerator up to 3 days in a covered container; let sit at room temperature 15–20 minutes before serving. Freezing: yes, freeze unfrosted cupcakes up to 2 months, then thaw and frost. For a lighter option, use 1/2 the powdered sugar and increase cream slightly for a softer pipe—texture will be less rigid than classic buttercream.