Using an electric mixer, beat together the Nutella® (1/2 cup) and Powdered Confectioners Sugar (2 tablespoon) until smooth, thickened, and a little stiff.
Line a half-sheet pan with waxed paper. Arrange two ring molds or round cookie cutters on the half-sheet pan and divide the nutella between the two molds, spreading it smooth. Refrigerate for 20 minutes, or until firm.
To assemble the burger, start by slicing the Sugar Donut (2) in half like a hamburger bun. Add the sliced Kiwifruit (1) and thinly sliced Fresh Strawberry (4) to the bottom half of the "buns."
Then add the nutella patty.
Add the thinly sliced Mango (1).
Finally, add the top doughnut "bun," and enjoy!