Mix the whole flour, 1 tablespoon sugar, 1⁄2 teaspoon cinnamon and 1 pinch of salt in a bowl. Mix milk and eggs with 1⁄4 l milk and eggs with the whisk of the hand mixer to a smooth dough. Let the pancake batter swell for about 15 minutes.
Stir the sour cream, quark and 3 tablespoons of milk until smooth. Stir in lemon zest, 2 tablespoons sugar and vanilla sugar. Mix 3-4 tbsp. sugar and 1⁄2 tsp. cinnamon. Wash the apples and remove the core with an apple corer.
Cut apples into rings and sprinkle with lemon juice.
Heat the clarified butter in portions in a coated pan (approx. 22 cm Ø). Briefly sauté 4-6 apple rings (depending on size) in it. Add 1⁄4 of the dough. Bake at medium heat until golden on each side.
Keep the pancakes warm. Bake 3 more pancakes with the remaining apple rings and dough. Serve with curd cream and cinnamon sugar.