Curried butter-baked cod with cauliflower & chickpeas

Name: Curried butter-baked cod with cauliflower & chickpeas
Prep time: 30 min
Cook time: 40 min
Total time: 1 h 10 min
Cuisine: Asian, Indian
Ingredients: 1 large cauliflower, cut into florets; 1 tsp cumin seeds; 1 tsp ground turmeric; 2 tbsp sunflower oil; 4 garlic cloves; large piece of ginger, peeled; 1 red chilli, sliced; 1 tbsp curry powder of your choice (we used madras); 2 x 400g cans chickpeas, drained, rinsed and patted dry; 100g butter, softened; 500-600g chunky white fish (such as cod, hake or pollock), cut into 4 equal chunks; 400g spinach; handful of coriander, leaves picked and roughly chopped; large pinch of garam masala