Spiced green bean and tomato stew

Name: Spiced green bean and tomato stew
Ingredients: 2 tbsp olive oil; 1 large garlic bulb, cloves peeled and thinly sliced; 400g/14oz green beans, trimmed; 2 tsp ground cumin; 1 heaped tsp ground cinnamon; 1 heaped tsp ground turmeric; 400g/14oz tomatoes, cored and roughly chopped; 400g tin chopped tomatoes; 1 heaped tsp caster sugar; sea salt and freshly ground black pepper; 1 heaped tbsp rose harissa; olive oil, for drizzling; 200g/7oz labneh or Greek-style yoghurt; 2 large handfuls peanuts, dry-toasted until slightly scorched