Steam the onion in oil. Add rosemary and pumpkin and fry. Deglaze with a dash of white wine and cook until al dente.
Stir in the tofu. Salt and pepper.
Add enough breadcrumbs to get a malleable mass. Fill the savoy cabbage leaves with it. Put in an ovenproof dish and pour in the vegetable stock. Heat in the preheated oven to 200 ° until the roulades are hot through and through.