Chickpea and Sweet Potato Curry

Name: Chickpea and Sweet Potato Curry
Prep time: 5 min
Cook time: 30 min
Total time: 35 min
Cuisine: Indian
Ingredients: 2 tbsp vegetable oil; 1 large onion (or 2 small) (peeled and finely chopped); 2 cloves garlic (minced); 2 tsp minced ginger; 2 tbsp mild curry powder ((go hotter if you prefer curry powder)); 1 tbsp ground coriander; ½ tbsp ground cumin; 1 tsp paprika; ½ tsp ground cinnamon; 1/2 tsp salt; ½ tsp black pepper; 2 medium sweet potatoes ((around 450g altogether) peeled and chopped into 2cm chunks); 1 x 400 g (1 x 14 oz) chickpeas (drained); 2 x 400 g (2 x 14 oz) chopped tomatoes; 2 tbsp tomato puree ((paste for US)); 1 x 400 g (1 x 14 oz) full-fat coconut milk; 60 g (2 packed cups) baby spinach; boiled rice; fresh coriander; red onion slices; chilli flakes