Chicken and pumpkin korma

Ingredients

• 1 tablespoon vegetable oil
• 1 medium red onion, thinly sliced
• 1/3 cup korma curry paste
• 600 gram chicken thigh fillets, chopped
• 400 gram can diced tomatoes
• 1/2 cup water
• 750 gram butternut pumpkin, peeled, cut into 2.5cm pieces
• 300 millilitre can coconut milk
• 1 cup frozen peas
• 3 cup cooked long-grain white rice, to serve
• 1/2 cup natural yogurt, to serve
• 8 cooked pappadums, to serve