Heat the milk to a little warmer than hand temperature. Mix in dry yeast, psyllium, salt, cardamom and PULS Whey Vanilla. Let stand for a while. Add the oat flour + sweetener of your choice into mixture and mix until smooth. Finally, add the butter and egg and mix until the dough is smooth. Bake into a bun. The dough is sticky, so flour your hands while baking as needed. Rise the buns for about 20 minutes. Brush with egg and bake in 200°C for 15 minutes. Let the buns cool down.
Prepare the filling. Measure the ingredients into a blender and mix until smooth. If necessary, add a splash of liquid, but as little as possible to keep the filling firm. Spoon between the buns.
Garnish with icing sugar if desired and serve immediately.
