Prawn Tikka Masala - Pinch Of Nom

Ingredients

• 400 g frozen raw king prawns, (defrosted and well drained)
• juice of 1/2 lemon
• 1 tsp mild chilli powder
• ¼ tsp salt
• ¼ tsp ground black pepper
• 1 medium onion, (peeled and finely chopped)
• 1 medium red pepper, (deseeded and cut into 2cm pieces)
• 3 garlic cloves, (peeled and crushed)
• 2 cm piece of root ginger, (peeled and finely grated)
• 1 tbsp garam masala powder
• 1 tsp ground cumin
• 1 tsp ground coriander
• 1 tsp ground turmeric
• 2 tsp ground paprika
• 2 tbsp tomato puree
• 400 g tin of chopped tomatoes
• 1 tsp white granulated sweetener or sugar
• 120 g fat-free Greek-style yoghurt
• 3 tbsp fresh coriander leaves, (stalks removed and roughly chopped)
• low-calorie cooking spray