For the blueberry strudel, mix the ingredients for the strudel dough well together, form into a ball and let rest in the refrigerator for at least half an hour.
Then prepare the butter crumbs: Melt the butter and add the crumbs – toast well until slightly crisp.
Roll out the dough on a floured strudel cloth and carefully stretch it out until you can see the back of your hand through the dough.
Then spread melted butter over the dough and top with the overcooled crumbs. Sprinkle the blueberries on top and season with cinnamon and sugar.
Finally, drizzle some lemon juice on top and fold the dough left and right with the help of the strudel cloth and roll it up crosswise.
Brush the rolled-up blueberry strudel with butter and bake at approx. 160°C for approx. 45 – 50 minutes.
Serve with a warm vanilla sauce or vanilla ice cream with whipped cream.