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5 from 1 vote

Homemade Funfetti Cupcakes

Bright and colorful cupcakes filled with sprinkles for a festive look. The vanilla cupcake base is tender, moist, and delicious using sour cream in the batter. Top them off with a smooth and creamy buttercream frosting...and more sprinkles, of course.
Prep Time20 minutes
Active Time20 minutes
Cooling Time30 minutes
Total Time1 hour 10 minutes
Course: Dessert
Cuisine: American
Keyword: bright and colorful, comfort food, festive, vanilla
Yield: 20
Calories: 331kcal
Author: Sweet Ordeal

Materials

Cupcakes:

  • 1 3/4 cups cake flour (or 1 1/2 cups all-purpose flour)
  • 3/4 tsp. baking powder
  • 1/4 tsp. baking soda
  • 1/4 tsp. salt
  • 1 cup granulated sugar
  • 1/2 cup unsalted butter, softened to room temperature
  • 3 large egg whites, room temperature
  • 2 tsp. vanilla extract
  • 1/2 cup sour cream, room temperature
  • 1/2 cup whole milk, room temperature
  • 1/2 cup rainbow sprinkles, (see Notes below)

Vanilla Buttercream:

  • 1 cup salted butter, softened
  • 1 tsp. vanilla extract
  • 4 cups powdered sugar
  • 3 Tbsp. milk or whipping cream

Instructions

Cupcakes:

  • Preheat oven to 350° and place 20 cupcake liners in 2 muffin pans.
  • In medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
  • In large bowl, beat sugar and butter together until light and fluffy, about 2 minutes. Add the egg whites and vanilla, scraping sides as you go. Stir in the sour cream.
  • Alternate the flour mixture with the milk, starting and ending with the flour mixture. Stir just until combined, do not over mix. Stir in sprinkles.
  • Divide batter evenly between 20 liners. Bake for 18 -22 minutes, or until a toothpick inserted in the center comes out clean or with crumbs (not wet). Let cool in pans for 5 minutes, then remove cupcakes to wire rack to cool completely while you make the frosting.

Vanilla Buttercream:

  • Beat the butter and vanilla until light and fluffy. Add 2 cups powdered sugar and 2 tablespoons milk. Beat until combined, then add remaining powdered sugar and milk as necessary until you reach desired consistency.
  • Spread or pipe buttercream frosting on cooled cupcakes and add more confetti sprinkles for that bright and festive look. Enjoy!

Notes

For sprinkles, use the long sprinkles, sometimes called Jimmies, and/or use the small round confetti sprinkles. Sprinkles to avoid are the nonpareils (small tiny balls) as they will bleed color as soon as they meet the batter.

Nutrition

Calories: 331kcal | Carbohydrates: 46g | Protein: 2g | Fat: 16g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 41mg | Sodium: 148mg | Potassium: 45mg | Fiber: 0.3g | Sugar: 38g | Vitamin A: 476IU | Vitamin C: 0.1mg | Calcium: 33mg | Iron: 0.2mg