Beetroot burger - Good Food Middle East

Ingredients

• 1 onion, quartered
• 3 tbsp olive oil, plus extra for brushing
• 2 garlic cloves, crushed
• 200g chestnut mushrooms
• 250g smoked or regular tofu
• 2 (about 100g) cooked beetroot (not in vinegar)
• 400g can black beans, drained
• 1 tbsp tomato purée
• 2 tbsp vegan mayonnaise
• 1 tbsp miso paste
• 100g oat flour
• 2 tbsp ground flaxseed
• 50g pecans
• 200g pouch microwave brown rice, cooked
• 8 cheese slices, vegan if needed (optional)
• 8 burger buns, split (check the label, if catering for vegans)
• tomato chilli jam (see recipe, below)
• a few crunchy lettuce leaves
• 1 avocado, stoned, peeled and roughly mashed
• ½ lime, juiced