Wash the vegetables and remove the seeds from the pumpkin. Peel the onion and cut into fine strips. Cut the remaining vegetables into 4 - 5 cm long pieces or the pumpkin into small pieces and grate them in a food processor or by hand.
Heat the frying oil in a pan and fry the vegetables for about 15 minutes, until they are cooked and season with the spices.
Preheat the oven to 200 ° C, prick the dough with a fork and brush with olive oil and prebake for 8 minutes.
Meanwhile mix the soy quark with the mustard and the spices.
Brush the pre-baked dough with the soy quark, place the vegetables on top and bake for another 15 minutes.