For best results, use the KitchenAid Magnetic Drive Torrent Blender

Preheat oven to 220°C/ 200°C (fan forced). Combine potatoes, 2 tablespoons olive oil, 1 teaspoon salt and rosemary in large bowl; toss to coat. Spread in large shallow baking pan

Roast 35 to 40 minutes or until crisp and brown, turning every 10 minutes

Meanwhile, place tomatoes, remaining 1/3 cup olive oil, vinegar, garlic, chili powder, paprika, remaining 1/4 teaspoon salt, chili powder and red pepper in pitcher of KitchenAid Magnetic Drive Torrent Blender

Cover and blend on medium speed 20 to 30 seconds or until smooth. Transfer to small saucepan. Cover and cook over medium-high heat 5 minutes or until slightly thickened. Cool slightly

Drizzle sauce over potatoes or serve sauce in separate bowl for dipping