Creamy Cauliflower Korma

• 1 tbsp extra virgin olive oil
• 1 brown onion, finely chopped
• 1 head of cauliflower
• 3 tbsp Korma paste
• 800 g coconut cream, tin
• 1 cup green peas, frozen
• 0.5 cup cashews, roasted
• 0.5 cup coriander, roughly chopped
• 450 g brown rice, cooked