Bring 3-4 l salted water (1 teaspoon salt per litre) to the boil. Mix pesto with yoghurt and almonds. Season to taste with salt and pepper.
Cook the pasta in boiling salted water according to the instructions on the packet. Slice cheese into shavings. Drain noodles and put them back into the pot. Mix with the yoghurt pesto. Serve and sprinkle with cheese.