Step 1

Heat the oven to 400°F / 200°C.

Step 2

Mix the oil, spices and salt and pepper in a large bowl. Add the zucchini, pepper and mushrooms and toss to coat.

Step 3

Spread the vegetables in an even layer on a baking tray and bake for 15 minutes or until soft.

Step 4

Rinse the thinly sliced red onion and drain. Add to a bowl with the lime juice and vinegar and toss to coat. Leave for 10 minutes to marinate.

Step 5

To serve, cut the rolls and layer with avocado slices, pickled onions, roasted vegetables and top with parsley. Enjoy!