Peel and finely chop the onion. Heat 1 tablespoon of oil in a pot, fry the onion and rice in it. Add white wine and stock little by little. Cook rice for about 30 minutes, stirring from time to time.
Wash the schnitzel and dab dry. Heat 1 tablespoon of oil in a pan. Fry escalopes for 6-8 minutes at medium heat. Turn from time to time. Wash oregano and pat dry. Pluck the leaves from a stalk.
Season cutlets with salt, pepper and oregano leaves. Add peas to the rice 5 minutes before the end of cooking time. Fold the parmesan into the Risi Bisi. Arrange Risi Bisi and Schnitzel on plates. Garnish with oregano and lemon.
Serve with lemon wedges.