Boil up the milk. Stir rice into the boiling milk and prepare according to package instructions. In the meantime, whisk the eggs, 75 g sugar, 1 packet of vanilla sugar and salt until creamy. Stir in the quark, buttermilk and yoghurt
Remove the rice pudding from the heat, allow to cool slightly and then mix evenly with the quark mixture. Pour into an ovenproof greased mould (1.75 litres capacity)
Bake on the lower shelf in a preheated oven (electric oven: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for 50-55 minutes. About 15 minutes before the end of the baking time, spread butter in flakes on the casserole. In the meantime, wash, halve and stone the plums
Bring 450 ml of nectar, 1 packet of vanillin sugar and 50 g of sugar to the boil in a saucepan. Stir 50 ml nectar and sauce powder until smooth. Stir into the boiling juice, bring to the boil and simmer for about 1 minute while stirring. Add the plums and simmer over a low to medium heat for 2-3 minutes
Remove from the heat and pour into a bowl. Mix 1 1/2 tbsp. sugar and cinnamon. Remove the casserole from the oven and sprinkle with cinnamon and sugar mixture. Add the compote