1.Pre-heat your oven to 200°C / 400°F
2.Line a baking tray(s) with some greaseproof paper.
3.Spoon out the grated parmesan into little piles, each about 1 x tbsp. Leave enough room in between each so that when they melt they don’t stick together. About 2.5 cm / 1 x in. should do it. Of course this will depend a little on how big you make your crisps.
4.Sprinkle some thyme over each crisp and grind a little black pepper over them too.
5.Place them in the oven for up to about 5 minutes. Check after 3 minutes. The crisps are ready when they have melted and are bubbling flat on the tray. If you leave them too long, they will take on colour and become bitter.
6.Remove and cool before serving.