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Funfetti Bundt Cake (A Doctored Cake Mix Recipe)

Course: Dessert
Cuisine: American
Keyword: funfetti bundt cake
Prep Time: 20 minutes
Cook Time: 1 hour
Servings: 15 servings
Calories: 555kcal
Author: Kara @I Scream for Buttercream
This homemade funfetti bundt cake is so easy to make. Using a cake mix as the base, you'll add other ingredients and sprinkles to make the perfect easy birthday cake.
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For the cake:

  • 1 cup unsalted butter (room temp)
  • 1 8 oz pkg. cream cheese (room temp)
  • 2 tsps clear vanilla extract (or regular vanilla extract if you don't have clear)
  • ¼ teaspoon almond emulsion (optional)
  • ½ tsp. lemon extract
  • 6 egg whites
  • ¼ cup vegetable oil (or canola oil)
  • cup milk
  • ¼ cup water
  • 1 3.4 oz. pkg. white chocolate instant pudding mix (dry)
  • ¼ cup all purpose flour
  • ¼ cup sugar
  • 1 box white cake mix
  • ¾ cup rainbow jimmies

For the Glaze:

  • 4 cups confectioner's sugar
  • 1 teaspoon clear vanilla extract (or regular if you don't have clear)
  • cup milk (or cream)
  • pinch of salt


For the cake:

  • Preheat oven to 325 degrees. Grease and flour a 10″ bundt pan very well.
  • Mix butter, cream cheese and extracts very well until completely smooth.
  • Add in the rest of the ingredients and mix on medium to medium/high until well incorporated. The batter will be thick.
  • Stir in the rainbow jimmies.
  • Add to prepared pan and smooth the batter even.
  • Bake at 325 for 60-65 minutes.
  • Cool in the pan on a wire rack for about 20 minutes, then turn out of the pan onto the wire rack and cool completely before adding a glaze or powdered sugar.

For the glaze:

  • In a mixing bowl, add in the confectioners sugar, extract, milk and pinch of salt. Mix well until smooth.
  • Check the consistency. If it's too thick for drizzling, add more milk or cream by tablespoon until desired consistency. If it's too thin, add in another cup of confectioner's sugar.
  • Drizzle over cooled cake.



This cake can be frozen for up to a month if wrapped well in plastic wrap and foil.
Nutritional values are an estimate.
Make sure to check out the TIPS & FAQs for this recipe in the blog post.
*This recipe card may contain affiliate links. As an Amazon Associate, I earn from qualifying purchases.


Calories: 555kcal | Carbohydrates: 73g | Protein: 4g | Fat: 28g | Saturated Fat: 18g | Cholesterol: 66mg | Sodium: 374mg | Potassium: 61mg | Fiber: 1g | Sugar: 57g | Vitamin A: 772IU | Calcium: 94mg | Iron: 1mg