Pasta puttanesca

Ingredients

• 400g wholewheat spaghetti
• 1 teaspoon olive oil
• 1 onion, finely chopped
• 1 clove garlic, peeled and finely diced
• 2 x 400g can chopped tomatoes
• 20g black olives, pitted and roughly chopped
• 2 anchovy fillets, finely chopped
• Large handful fresh basil, roughly chopped
• Freshly ground black pepper