Lamb and Cauliflower Biryani

• 200 g lamb rump steak, fat trimmed
• 1 brown onion, finely chopped
• 0.5 cauliflower, cut into bite size pieces
• 90 g Korma curry paste
• 0.75 basmati rice, washed
• 400 g chickpeas, drained, rinsed
• 2 cup baby spinach leaves
• 0.3 cup plain Greek yoghurt