Remove the raspberries from the freezer, pick out 12 beautiful raspberries and chill them. Defrost the remaining raspberries. Grease the recesses of a muffin tray (12 recesses). Cut 24 strips (2 x 16 cm) from baking paper and place them crosswise in the trays.
Wash the lemon thoroughly and finely grate half of the peel. Halve the lemon and squeeze the juice. Measure out 3 tbsp. juice. Place cream cheese, sour cream, eggs, 75 g sugar, vanillin sugar, lemon juice and zest in a mixing bowl.
Mix flour and 1 tablespoon of starch and sieve over it. Mix until creamy with the whisk of the hand mixer.
Spread the cheese mixture into the muffin troughs and bake in the preheated oven, middle shelf (electric oven: 175 °C/ convection oven: 150 °C/ gas: see manufacturer) for approx. 20 minutes. Let the cheesecake cool in the baking tray on a cake rack.
Puree the raspberries and put them in a small pot with 1 tablespoon of sugar. Bring to the boil. Mix 1 tbsp. starch and 2-3 tbsp. cold water, stir into the puree and let it simmer again for about 1 minute. Spread the raspberry puree on the cheesecake muffins and decorate with 1 raspberry each.
Let it cool down for about 30 minutes or put it in a cool place. If necessary, use a small knife to remove muffins from the edge and lift them out of the trough using the paper strips.