Mix together the cheese and banana and season with pepper and a dash of lemon juice.
Brush two of the sheets of filo generously with butter, and lay one on top of the other. Keep the remaining filo covered with a sheet of greaseproof paper, and over that a clean damp tea towel, to prevent it drying out. Gut the double layer of buttered filo into eight strips. Put a teaspoon of the chees