1.Preheat oven to 220°C (200°C fan forced).
2.Blend or process tomatoes until almost smooth, spread over pizza bases leaving a 1cm (½ inch) border. Place bases on oven trays.
3.Top bases with olives, chorizo, half the basil and half the cheese. Bake for 15 minutes or until base is crisp, season.
4.Serve pizza sprinkled with remaining basil and cheese.