Wash and drain the rice. Cut the vanilla pod lengthwise and scrape out the pulp with the back of a knife. Bring milk, vanilla pulp and pod to the boil. Add rice and simmer for about 45 minutes, stirring several times.
Add condensed milk to the rice pudding. Take the pot off the heat and remove the vanilla pod. Let the rice pudding cool down lukewarm.
Wash and quarter the apples and remove the core. Cut the apple quarters into thin slices. Melt butter in a pan. Fry apples in it for 2-3 minutes on both sides. Add sugar and continue frying for about 30 seconds, remove.
Fill rice pudding into small bowls. Spread apple slices on top and dust with cinnamon.