Griddled vegetable and halloumi burger with chilli yoghurt

Method

1. Heat a griddle pan to high. Cut the courgettes and aubergine into thin strips. Cut the onion into 8 wedges and the halloumi into 8 slices.
2. Brush the aubergines with oil on both sides, season with salt and pepper, then griddle for 2-3 minutes on both sides until tender and striped (don’t crowd the griddle pan – cook in batches if necessary). Remove and keep warm. Repeat with the courgettes. Toss the onion with the vinegar and griddle as above, then grill the halloumi for 10-20 seconds on each side. Halve the rolls and toast lightly, cut-side down, on the griddle pan for 20 seconds.
3. Meanwhile mix the yogurt and chilli sauce in a bowl.
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5. To make each burger put the courgettes, aubergine, halloumi and onions on the base, then top with the chilli yogurt and rocket. Add the roll tops and serve.