Quick Prawns in Creamy Red Thai Curry

Ingredients

• 1 lb (450g) large prawns, peeled and deveined
• 1 can (13.5 oz or 400ml) coconut milk
• 2 tablespoons red curry paste
• 1 tablespoon vegetable oil
• 1 medium onion, thinly sliced
• 2 cloves garlic, minced
• 1 tablespoon fresh ginger, grated
• 1 red bell pepper, sliced
• 1 cup (150g) snap peas or green beans
• 2 tablespoons fish sauce
• 1 tablespoon brown sugar
• Juice of 1 lime
• Fresh cilantro, for garnish