Peel the apples and cut into thin slices. Toss slices in a bowl with 1 tablespoon of cinnamon and 1 tablespoon of sugar. Melt butter. Brush mold with butter. Cool the remaining butter to room temperature and add 1/2 cup of sugar and brown sugar. Whisk butter and sugars until fluffy. Add egg with milk and whisk. Stir in flour, baking powder and remaining 1 teaspoon cinnamon. Pour into the mold. Put the sliced apples on top and bake in a preheated 350-degree oven for 40 minutes.;
Scrape the vanilla bean into scalded milk. Whisk yolks and sugar. Add a little hot milk to the yolk and sugar mixture. Pour back into the hot milk. Stir continuously with a wooden spoon over a low heat until it starts to thicken. Make sure it does not boil. Strain and let cool down.
Recipe courtesy of Marcus Samuelsson, Executive Chef of Aquavit, NY