Indian prawn curry - Georgina O'Sullivan Cooks

Ingredients

• 2 tablespoons sunflower oil
• 2 large onions, finely chopped
• 1 teaspoon ground cumin
• 1 teaspoon ground coriander
• ½ teaspoon turmeric
• ½ chilli flakes
• 2-3 cloves garlic, chopped
• 1 tablespoon fresh ginger, chopped
• 2 tablespoons Greek-style yogurt
• 400ml can chopped tomatoes
• 1 teaspoon garam masala
• salt and black pepper
• 2 tablespoons fresh coriander, chopped
• 1 red chilli, finely chopped
• 600g raw prawns, peeled
• 3 tablespoons Greek-style yogurt
• 2 green chillies, chopped
• pinch of salt