Cook the noodles in a large saucepan of boiling, salted water with 1tsp cooking oil, until just soft (about 7-10 minutes).
Grate the cheese, or chop it finely into very small cubes.
Drain the noodles, return to the hot, dry pan and shake for a moment in the pan over the heat, to dry them and keep them hot. Remove from the heat and stir in the cheese and the butter. Season with the salt and pepper and pile onto a hot dish. Serve at once.