3. Place the wonton wraps on the counter. Put 1 banana slice on each wrap, then scoop ½ teaspoon Nutella on the banana.
4. In a small dish, beat the egg with 1 tablespoon of water. With your finger, wet the two sides off the wrap then fold it over the filling to create a triangle. Pinch the edges to seal. Place the wontons on a baking sheet lined with silicone mat or parchment paper.
5. Brush the egg wash over the top and bake for 13-15 minutes, or until golden brown.