Steep the peeled and chopped rhubarb with 50 g of date sweetener for 1 hour.Then mix with 1 teaspoon of cinnamon and 10 g of cornflour. Mix the flour with the remaining cornflour and baking powder. Add 50 g date flour. Make a batter with the soy yogurt and soy drink.
Preheat the oven to 180 degrees Celsius top/bottom heat.
Place small round mounds of dough on a baking tray lined with baking paper and flatten them slightly with a slight hollow inside. Pour the rhubarb mixture into this hollow.
Bake the rhubarb tarts in the oven for 25 minutes.