Dice onions and pancetta and sauté with a little olive oil in a pan until translucent.

Beat the eggs.

Finely chop the parsley and mix with the beaten eggs. Season with salt and pepper. Grate the Parmesan cheese and stir into the egg mixture.

Boil the spaghetti, pour off the cooking water, then stir immediately with the egg mixture so that the egg sets. Finished!