Light your barbecue. When the coals are silvery in colour, it’s ready to cook on. Scatter the heather over the coals, then place the rack onto the BBQ. Place the lamb onto the rack and cook for 2–3 minutes on each side, seasoning as you go. Lift onto a board and let rest.
To make the ratatouille, heat a flameproof pan on the BBQ until hot then add the oil and stir in the onions and garlic. After 1 minute, add the diced courgette, then after another minute, stir in the diced aubergine. Cook for a further 1 minute, then stir in the pepper, followed by the tomatoes and basil. Season, then gently simmer for a further 2 minutes.
To make the salsa verde, mix all the ingredients together in a bowl and season well. To serve, spoon
the ratatouille into a bowl. Place the lamb onto 4 dinner plates and spoon over the salsa verde. Drizzle over a little more oil if you’d like to, and let everyone help themselves to the ratatouille.