Prepare donut mix according to manufacturer's insturctions and shape into long johns. Fry and let cool completely.
Using a serrated knife, slice unfilled long john donut lengthwise, without cutting through completely. Pipe a line of banana cream filling down the length of the donut. Pipe a rosette of vanilla whipped topping in the center of the donut. Pipe a rosette of chocolate whipped topping on one side of the vanilla. In a bowl, mix vanilla whipped topping with strawberry filling to create a strawberry flavored icing. Pipe a rosette of the strawberry icing on the other side of the vanilla, completing the trio of flavors. Place 2-3 banana chips on top of the donut. String ice with warmed donut cing. Top with maraschino cherry.
LongJohn, Strawberry, Vanilla, Chocolate, Cherry, Dried Fruit, Doughnut