Cheesecake that melts in your mouth! You will be delighted!

Ingredients: (form diameter 18 cm) Dough: Egg - 1 pc Sugar - 40 grams Salt - a pinch Butter - 90 grams Baking powder - 1 tsp Flour - 250 grams Filling: Cottage cheese - 400 grams Sour cream - 100 grams Sugar - 80 grams Vanilla sugar - 1 tsp Egg - 2 pcs Cornstarch - 1 tbsp Bake at 170°C 45 - 55 minutes