Warm the milk lukewarm. Crumble yeast into it and dissolve. Put flour, 1 pinch of salt, 2-3 tablespoons of sugar and vanillin sugar in a bowl. Add yeast milk, mix everything smooth.
Melt 2 tablespoons of butter. Separate eggs. Stir egg yolk and butter into the dough. Cover and leave to rise in a warm place for about 30 minutes.
Wash apples, grate them dry and possibly cut out the core. Cut apples into approx. 6 slices each.
Beat the egg white until stiff and fold into the dough. Heat 1 tablespoon butter in a coated pan. Add 4 apple slices. Spread 2-3 tbsp. of dough on each slice. Bake the pancakes on each side until golden brown, remove and keep warm.
Bake more pancakes from the rest of the butter, apples and dough. Mix 2 tablespoons sugar and 1/2 teaspoon cinnamon. Arrange the pancakes with crème fraîche or cinnamon sugar.