Quark and Rhubarb Pie

Beat the mixture briefly until combined. Sprinkle with a little flour.

Cover the bowl with a towel and set it in a warm spot to rise for about 1 hour, or until noticeably puffy.

Pour in the melted butter. Beat the egg, then set aside about 1 teaspoon for later use as an egg wash.

Add the rest of the beaten egg into the dough mixture.

Spread the rhubarb, sugar, and cinnamon over the dough rectangle, leaving about 2 cm of one edge empty.

Starting from the filled side, roll the dough tightly into a log. Cut the log into 6–7 equal slices. Take the empty edge and tuck it under each roll to form a neat bottom.