1Heat oven to 350°F (325°F for dark or nonstick pans). Make, bake and cool cake as directed on box for two 8-inch or 9-inch rounds.
2Place 1 cake layer, rounded side down, on serving plate. Spread with about 1/3 cup frosting. Place other layer, rounded side up, on top. Frost side and top of cake with remaining frosting.
3Make a small hole in each piece of fruit with a skewer. Place a birthday candle into each piece of fruit. Gently push fruit candleholders into frosting. Keep cake cool until ready to serve. Store loosely covered in refrigerator.