Preheat the oven at 190 C and line a tray with baking paper.
Unroll the pastry and cut into 8 equal rectangles and then cut each rectangle diagonally. You will have 16 triangles now.
Spread some Nutella on each triangle and then place the banana chunk or 2-3 cherries or mixed on each.
Once all finished with spreading and placing the fruits start rolling them and place in the baking tray.
Beat the egg white slightly and with a silicone brush brush every single one over to give them a nice finish. They will look good!
Bake for 15 min at 180 C until they're become beautifully puffed up and turn a nice brown.
Take out of the oven and try and reach the table. I tried to get a few snaps before realizing there were none left despite being quite hot. All I could hear was a lot of "hmmmms" and quite a bit of blowing going on ? ?