Knead 100 g butter, 125 g flour, 75 g sugar and 1 sachet of vanillin sugar with the dough hooks of the hand mixer into crumbles. Put in a cool place. Peel and quarter apples and remove core. Slightly cut the quarter lengthwise with a knife and sprinkle with 3 tablespoons of lemon juice. Cream 125 g fat, 100 g sugar, 1 packet vanilla sugar, salt and cinnamon with the whisk of the hand mixer. Stir in the eggs one by one. Mix 250 g flour and baking powder and stir in alternately with the milk.
Place one paper sleeve in each of the 12 wells of a muffin tray. Spread the dough evenly in the hollows and cover each with a quarter of an apple. Spread the crumbles on the 12 muffins and bake in a preheated oven (electric range: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 30 minutes. Take the muffins out of the oven, remove them from the baking tins and let them cool down on a cake rack. Mix icing sugar and 1-2 tablespoons of lemon juice to a thick icing and fill into a freezer bag. Cut off 1 small corner and squirt the icing in strips over the cold muffins. Whipped cream tastes good with it
Waiting time approx. 1 hour