240²µ/8½´Ç³ú broccoli, thinly sliced
80²µ/2¾´Ç³ú kale, thick stalks discarded, leaves roughly chopped
240²µ/8½´Ç³ú button mushrooms, thinly sliced
2 red peppers, seeds removed, thinly sliced
2 orange peppers, seeds removed, thinly sliced
½ small red onion, thinly sliced
160²µ/5¾´Ç³ú sweet potato, peeled and cubed
240²µ/8½´Ç³ú sweetcorn (tinned or frozen)
80²µ/2¾´Ç³ú pitted Kalamata olives
300²µ/10½´Ç³ú passata
freshly ground black pepper
4 tsp olive oil, plus extra for the bowl
1 tsp dried oregano
225g/8oz strong white flour, plus extra for dusting
225g/8oz strong wholemeal flour
1 tsp fast-action dried active yeast
300²µ/10½´Ç³ú 50% reduced-fat mature cheddar, grated