Spread one quarter of the cottage cheese and pesto mixture on the bottom of a 23 x 33-cm (9 x 13-inch) baking dish. Cover with a layer of noodles. Add another quarter of the pesto mixture. Sprinkle with 125 ml (1/2 cup) mozzarella. Cover with another layer of
noodles. Lay the fish fillets on top. Season with salt and pepper. Add another quarter of the pesto mixture. Finish with a layer of noodles and the remaining pesto mixture and mozzarella. Bake uncovered for about 45 minutes. Brown under the broiler to finish. Let stand for 5 minutes before serving.
