Artificial sweeteners used in this recipe were to avoid sugar and calories. Sugar adds calories, and that cause weight gain with no end. But let's face the cruel reality: removing sugar from cakes and desserts doesn't automatically make them low-calorie and healthier. The cake tastes lighter, but I ate twice much more than usual. Next time, I will just use the real sugar or honey. No more sugar substitutes.
- Whip together quark, yogurt and sweetener in a mixing bowl until blended. Soak the gelatin sheets in water until soft, about 5 minutes. Stir over the low heat until dissolved. Combine 4 tablespoons of quark mixture with the gelatin, then blend it with the rest of the quark mixture. Add in the roasted pine nuts and chill for 10 minutes. Whip the heavy cream until soft peaks form and fold into the quark mixture.
- Place the 9-inch cake in the bottom of the cake ring lined with a cake cardboard. Surround the cake ring with sliced strawberries and scrape the mousse onto the cake layer in the pan and smooth the top with a spatula. Covered with a plastic wrap and refrigerate at least 4 hours until filling is set.
- Put the strawberry glaze powder and sweetener in a small pot filled with water. Stir to blend and bring them to a boil over the medium heat until smooth. Cool glaze until barely lukewarm, about 15 minutes. The glaze should be thick but still with a pourable gel consistency. Take out the mousse cake from the fridge and cover with a layer of strawberry slices in the desired pattern. Gently pour over the strawberries and refrigerate for 1 hour or until glaze is firm. Unmold mousse cake with the help of a hot towel. Slice and serve with strawberries if desired.