What to do with leftovers when when you’ve rolled out puff pastry? You can’t really re-roll because you’ll lose the layering, so …
I sprinkle parmesan on top and then add some chopped black olives or anchovies or poppy seeds. Then I roll up the strips and cut into rounds. I place them on a sheet of baking paper and put them in a hot oven (200°C) for about 5 to10 minutes. When they’ve coloured nicely I turn them over for a few minutes more. I cool them on a rack and serve with drinks.
Of course if you use a whole sheet of puff, you’ll get evenly shaped rounds. With leftovers, it’s all charmingly uneven!
These freeze well too and it is useful to have a bag in the freezer.