Boil a large pan of salted water and cook the pasta.

Meanwhile, heat a knob of butter in a frying pan and cook the onion and bacon for 5-7 minutes until golden

Beat together the eggs, cream, most of the parmesan and plenty of black pepper

Drain the spaghetti and return to the pan, off the heat. Add the onion and egg mixtures and toss together with the peas

Serve and scatter the rest of the parmesan over