Inspiring vegetarian recipes
Try our vibrant veggie dishes, from meat-free lasagne to vegetable curry and vegetarian chilli
Heat the oven to 200c/fan 180c/gas 6. Toss the sweet potato wedges with 1 tbsp olive oil and some salt. Put on a baking tray in the oven and cook for 20-25 minutes until tender.
Mix together the lamb, onion and harissa and season really well. Form into 4 burgers. Griddle or grill for 4-5 minutes on each side until cooked through. Mix the cucumber into the yoghurt and season.
Put the burgers into the buns on top of some rocket leaves. Put a dollop of the yoghurt on each burger and serve the rest on the side with the sweet potato wedges.