One-Pot Chilli, Tomato, and Garlic Prawn Spaghetti

Ingredients

• 1 tablespoon olive oil
• 1 (150g) medium brown onion, chopped finely
• 2 clove garlic, crushed
• 1 fresh long red chilli, chopped finely
• 400 gram canned diced tomatoes
• 1/3 cup fresh basil, coarsely chopped
• 1 litre (4 cups) water
• 500 gram spaghetti
• 500 gram medium green prawns, peeled, deveined, tails intact
• freshly ground black pepper and salt, to season
• 2 tablespoon olive oil, extra
• 1/3 cup small fresh basil leaves, to sprinkle