Penne napoletana

Ingredients

• 500 gram penne pasta
• 1 tablespoon olive oil
• 1 onion, peeled, diced
• 2 clove garlic, thinly sliced
• 1/2 teaspoon dried chilli flakes
• 2 400g cans diced tomato with basil, onion and garlic
• 1/2 cup water (or red or white wine)
• 100 gram feta, crumbled
• 1/2 cup assorted olives
• 1/2 bunch parsley leaves, chopped