Melt the cheese in the microwave for 60-90 seconds, mix until smooth, let cool slightly and stir in the yolk
Transfer the dough to a large sheet of parchment, cover with another sheet and roll out the dough with a rolling pin. Remove the top layer of paper and cut the dough as a paste. Put the paste in the refrigerator for at least 6 hours.
Boil water in a saucepan and cook pasta for 40-60 seconds. Put in a colander and rinse with cold water. Cool slightly and serve with your favorite sauce!