How to make
Grate the zucchini and carrots coarsely. Sauté them in butter with the chopped leeks and salt until soft. Finally, add the dill.
Spread out the puff pastry. Distribute the vegetables evenly and sprinkle them with chopped walnuts and grated cheese.
Roll it up into a thick roll, place it in a greased tray with the seam down. Smear the top with beaten egg yolk and place in a preheated oven at 360°F (180 °C). Bake until golden.
