Sweet potato wedges with mole sauce

Name: Sweet potato wedges with mole sauce
Ingredients: 450g courgettes, cut into thick wedges; 300g small sweet potatoes, cut into thick wedges; 2½ tsp olive oil; 1 red onion, halved and thinly sliced; ½ lime, juiced; 1 onion, finely chopped; 1 tbsp chopped thyme; 400g can chopped tomatoes; ½ tsp vegetable bouillon powder; 3 tbsp crunchy peanut butter; 15g raisins, finely chopped; 1 tsp smoked paprika; ¼ tsp habanero chilli flakes (optional); 1 cinnamon stick; 400g can black beans; 2 tsp ground cumin; 3 garlic cloves, finely grated; small handful of coriander, to serve