Han and pasta gratin

400 gr fusilli, salt, 1 onion, 1 tablespoon olive oil, 300 gr baby peas, 250 gr ham, 3 eggs, 1 egg yolk, 300 ml cream, 150 ml milk, 100 gr parmesan, nutmeg

Boil the pasta in salt water, drain. Chop the onion and fry it in hot oil. Add the peas and fry them for another 2-3 minutes. Add salt and pepper. Cut the ham in small cubes.
Mix the eggs with the egg yolk, the cream and the milk. Add half of the parmesan and season with nutmeg.
Butter a Jena dish, mix the pasta with the peas and the ham, pour the egg cream over it, sprinkle with the rest of the parmesan and cook in the oven at 175 degrees for 60 minutes.