Wash, peel and quarter apples, cut out the core. Cut apples into cubes and sprinkle with lemon juice. Boil up apple juice, vanilla sugar, 75 g sugar and apples in a pot.
Simmer at low heat for about 5 minutes. Fill the compote into a bowl and let it cool down. In the meantime melt the fat in a small pot and let it cool down a little. Mix flour, 15 g sugar, baking powder and salt in a bowl.
Whisk buttermilk and eggs. Pour into the flour mixture while stirring and mix to a smooth, thin wafer dough. Finally stir in liquid fat. Preheat waffle iron, grease well.
Bake 8 waffles in a row. Stir the crème fraîche until smooth. Dust the waffles with icing sugar and serve with apple compote and crème fraîche. Dust with cinnamon.