A recipe for Creamsicle cake is found on Baked Bree. Its main ingredients are cake flour, sugar, eggs, orange juice and vegetable oil. Other ingredients include baking powder, orange zest, cream of tartar and salt.
To make Baked Bree's Creamsicle cake base, ingredients needed include 2 1/2 cups cake flour, 1 1/3 cups sugar, 1/2 cup vegetable oil, 3/4 cup orange juice and 5 large separated eggs. The recipe also calls for 1 tablespoon orange zest, 1 tablespoon baking powder, 1 teaspoon salt and 1/2 teaspoon cream of tartar.
Frosting ingredients include 8 ounces of room-temperature mascarpone, 2 cups heavy whipping cream, 3/4 cup sugar, 1 tablespoon vanilla and 2 tablespoons orange zest.
Preheat the oven to 350 degrees Fahrenheit. Next, combine the cake flour, sugar, baking powder and salt in a bowl. Beat the ingredients at medium-high for three to four minutes or until smooth, then stir in the orange zest. Add the cream of tartar to the egg whites, and beat until stiff peaks form. Fold the egg whites gently into the batter.
Next, spray two 9-inch cake pans with baking spray. Pour the batter into the prepared cake pans, and bake for 22 to 27 minutes, or until a toothpick inserted into the center comes out clean. Cool the cakes in their pans for 10 minutes before taking them out to cool completely on a wire rack.
To make the frosting, mix together the mascarpone and about 1/2 cup of the cream, and beat together until combined. Next, add the rest of the cream, powdered sugar, vanilla and orange zest, then whip until peaks form. Finally, frost the cake with the frosting.