For the Aromatic Rice Casserole with Cherries, bring the brown rice to the boil with water, lemon zest, natural vanilla sugar, brown sugar, cinnamon, cardamom seeds and a good pinch of nutmeg and simmer, covered, for 20 minutes.Mix in the milk and simmer the rice, covered, for about 30 minutes until soft.Preheat the oven to 180°C.
Mix the yogurt and egg with a hand mixer. In a bowl, mix the rice pudding with the yogurt sauce.Beat the egg whites with a pinch of salt until stiff and fold into the rice. Also fold the cherries into the mixture.Thinly butter an ovenproof dish. Pour the rice mixture into the dish. Bake the Aromatic Rice Casserole with Cherries in the preheated oven for 45 minutes and serve with vanilla sauce.