Add the chickpeas, sweet potato, onion, garlic, korma paste, chopped tomatoes, stock, tomato purée and mango chutney to your slow cooker.
Pour in the coconut milk and give everything a really good stir.
Cook on LOW for 5–6 hours or HIGH for 3–4 hours, until the sweet potato is lovely and soft.
Stir through the spinach for the final 5 minutes, until wilted.
Finish with the lime juice and season to taste.