Arborio rice, milk, granulated sugar, salt, and vanilla bean seeds should all be combined in a medium saucepan. Stirring constantly, simmer the mixture over medium heat.
Cook the rice, stirring regularly, for 30-35 minutes, or until it reaches a creamy consistency, on low heat with the lid off.
Melt the butter in a different skillet over medium heat as the rice cooks. Add the brown sugar, cinnamon, and apple slices. For about 10 minutes, cook the apples, stirring regularly, until they are soft and caramelized.
Remove the vanilla bean from the rice pudding and turn off the heat. Before serving, let it cool a little.
Rice pudding should be spooned into individual dishes before being topped with caramelized apples to serve. For more flavour, you can top the dish with more cinnamon.