Using a food processor, blend the butter and flour together until points to watch the mixture resembles breadcrumbs.
Crumble the cheese and add it to the bowl. Process for another 2–3 seconds only, then knead the mixture once or twice to evenly distribute the ingredients. (The mixture can now be refrigerated until needed.)
Heat the oven to 180°C (350°F/Gas 4). Pinch out small pi