Drain the pineapple. Mix flour, 90 g diabetic sweetener, vanilla pulp, salt, 40 g grated coconut, lime zest and fat to make crumbles. Divide a fat pan of the oven (approx. 32 x 37 cm) in the middle with a strip of aluminium foil folded several times. Grease one half, spread the crumbles evenly and press firmly. Sprinkle with 10 g grated coconut.
Mix sour cream, eggs, remaining diabetic sweetness and sauce powder. Pour on the dough and spread pineapple rings on top. Sprinkle with remaining grated coconut. Bake in a preheated oven at 175 °C (fan oven: 150 °C) for about 45 minutes. Take out and let cool on a grid