Candy Corn Surprise Cake

Ingredients

• Cake
• 2 boxes white cake mix
• ⅔ cup vegetable oil
• 6 large egg whites
• Yellow food coloring, as needed
• Orange food coloring, as needed
• Frosting
• 5½ cups confectioners’ sugar
• 3 sticks unsalted butter, at room temperature
• ¼ cup heavy cream
• 2 teaspoons pure vanilla extract
• Assembly
• One 9-ounce bag candy corn