Heat oil in a pan, add onion and sugar, and fry over medium heat until the onion begins to brown.
Add sliced cabbage, salt, pepper, and caraway and continue to fry, stirring occasionally. Lower the heat, and cook without a lid for about twenty minutes until the cabbage is reduced and softened. Taste and adjust seasoning if necessary.
Preheat the oven to 200 degrees Celsius (392 F).
Open the Pilas Dough (or puff pastry), and cut a sheet 38 cm long.
Place baking paper over the dough and turn it so that the baking paper is down and the plastic wrap is up. At this point, you can remove the plastic wrap.
Mark the narrow margins about 6 cm wide and cut the edges of the margins as in the picture.
Arrange the cabbage filling along the middle third of the dough but leave the top and bottom edges clean.
Fold the bottom and top edges over the dough. Cut strips 1.5 - 2 cm wide on both sides of the filling, and braid the stripes as in the photo.
Spray the top of the dough with Pam Oil spray * See a note at the post's bottom.
Put the strudel with the baking paper on a baking tray and place it in the center of the oven. Bake for about 40 minutes until puffed and browned. Remove from the oven, and let cool for a few minutes.
Serve with Vegan Sour Cream mixed with salt, black pepper, and olive oil.