Using a pair of scissors, cut the phyllo pastry into strips of 26x12cm. Quickly put back in its bag whatever you have left of pastry so that it doesn't dry up. The strips you can cover with a damp cloth to prevent them from drying up as you assemble the cigars.
Lightly brush melted butter on the phyllo pastry strip. Using the pastry bag, pipe a line of filling along the short side, leaving 1cm / ⅓in empty on each side.
Roll up the cigar all the way to the end of the strip and pinch it at the empty sides to seal them. They will still open up in the oven but this makes that happen more slowly so that it doesn't all come out.
Place the cigars on a baking tray lined with silpat or baking paper and lightly paint them with butter. Bake them in a preheated oven at 180°C/350°F for 12-15 minutes or until golden.
Serve immediately.