Melt the fat. Mix flour, baking powder, 1 packet of vanillin sugar, 1 tablespoon of sugar and salt. Whisk the egg with a whisk. Stir in sour cream, milk and liquid fat. Stir in flour mixture by the spoonful
Wash apples, grate them dry and cut the flesh first into slices, then into small cubes. Drizzle apple cubes with lemon juice
Heat 1 teaspoon of oil in a coated frying pan. Put 1/4 of the dough into the pan. Sprinkle with about 1 tbsp. apple cubes. Fry over medium heat for about 3 minutes on each side and place on a baking tray. Bake the rest of the dough with 1 tsp. oil in the same way
Beat the egg whites until stiff, adding 50 g sugar. Fill the beaten egg whites into a piping bag with a medium perforated spout and squirt them onto the pancakes in small tuffs. Bake the pancakes in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 4-5 minutes. Remove and arrange on plates. Sprinkle with remaining apple cubes and sprinkle with maple syrup. Dust with icing sugar