Rabarbrapai – Norwegian Rhubarb Pie with Crumble Topping

I love baking with seasonal ingredients, and probably the one season I look forward to the most is rhubarb season! I love simply stewing rhubarb with some sugar and eating it over yoghurt or ice cream – in fact I’ve been having this little dessert each night since the first day I spotted rhubarb in the shops here again. But I had a bit of extra time over the weekend so I decided to make a…