1Preheat oven to moderate, 180 C. Line an oven tray with baking paper.
2Toss pumpkin with 1 tbsp oil on tray. Season. Bake 10 to 15 mins until tender.
3Mash peas and beans. Stir in zucchini, flour and egg. Season. Shape into 6 even-sized patties.
4In a large frying pan, heat remaining oil on high. Fry patties 2-3 mins each side until golden and cooked through. Drain on paper towel.
5In same pan, cook haloumi on high, 1 to 2 mins each side until golden.
6Top each roll base with combined sour cream and sauce, pumpkin, patties, haloumi and mint.
Photo: Rob Shaw/Bauer