Ingredients

The following ingredients have 27 Servings
  • 18-19 oz box of white cake mix
  • 1 cup all purpose flour
  • 1 cup white sugar
  • 3/4 tsp salt
  • 1 1/3 cups water
  • 2 Tbsp vegetable oil
  • 1 tsp vanilla extract
  • 1 cup sour cream
  • 4 egg whites
  • VANILLA BUTTERCREAM FROSTING
  • 3 cups powdered sugar
  • 1 cup butter room temperature
  • 1 tsp vanilla extract
  • 1-2 Tbsp heavy cream

Instruction

  • Preheat oven to 325 degrees. Place cupcake liners in cupcake pans.
  • In a large bowl, or bowl of a stand mixer, whisk together cake mix, flour, sugar and salt. Add
  • all remaining ingredients and beat with mixer for 2 minutes, or until well blended.
  • Use ice cream scoop (or spoon that has been sprayed with cooking spray) to fill prepared
  • cupcake tins- fill about 3/4 full.
  • Bake about 18 minutes, or until toothpick inserted in center comes out clean.
  • FOR THE BUTTERCREAM FROSTING
  • In a large bowl, with a hand or stand mixer, cream together sugar and butter on low speed.
  • Mix until well blended. Increase speed to medium and beat for another 3 minutes.
  • Add vanilla and cream and continue to beat on medium speed for 1 minute more, adding
  • more cream if needed for desired spreading/piping consistency.
  • Scoop into a piping bag and pipe decoratively onto cupcakes, or spread onto cupcakes as desired.