If you don't have the rhubarb compote ready start by making it. Takes about 15 minutes.
Preheat the oven to 200. degrees Celcius.
Combine oat flour, oats, baking powder and cardamom in a bowl.
Whisk together egg and sweetener in a bowl. Add the yogurt/quark and apple sauce and mix until incorporated and you have a smooth batter.
Combine wet and dry ingredients and stir/mix just until combined.
Pour into a small oven safe bowl.
Made a whole in the middle using a spoon and add rhubarb compote.
Bake in the oven for 20-23 minutes.
Eat as is or top with topping of your choice.