Heat the oil, bacon and onion in a large pan (2-3 minutes) then add the pasta and 300ml of the cream. Keep the whole thing warm with little heat input (60 °).
In the meantime, add the whisked eggs and freshly grated Parmesan to the rest of the cream and season.
Put the contents of the pan in a casserole dish greased with olive oil and pour the cream-egg-parmesan spice mixture over it. Put the butter flakes on top and bake in the preheated oven at 175 ° C for 25-30 minutes, remove and sprinkle with the parsley.