Boil up plenty of salted water. Cut bacon into fine strips. Peel and finely chop the onion. Grate parmesan. Cut the vanilla pod lengthwise. Scrape out the pulp.
Heat the oil in a pan. Fry the bacon, onion and vanilla pod (not the pulp!) in it. Remove from the stove. Cook the pasta in boiling water for about 10 minutes until al dente.
Clean, wash and pluck the salad into individual leaves. Whisk eggs, salt, pepper and vanilla pulp. Remove vanilla pod from the bacon mixture. Stir the bacon mixture and 2/3 parmesan into the egg mixture.
Drain the pasta, let it drain and put it back into the pot. Add the egg mixture to the noodles. Mix everything well and fold in lamb's lettuce. Serve immediately and sprinkle with the remaining parmesan.