Step 1  Preheat oven to 220ºC. Process rosemary, tomatoes, garlic, oil and lemon juice in a small food processor until ingredients form a coarse paste.

Step 2  Cook potato for 2 minutes in boiling water. Add sweet potatoes and continue cooking for 4 minutes or until vegetables are tender. Drain.

Step 3  Place pizza base onto a baking tray. Spread evenly with rosemary mixture. Top with potato and sweet potato, slightly overlapping slices. Sprinkle with parmesan.

Step 4  Bake for 18-20 minutes until cheese has melted and vegetables are starting to brown. Top with chives and serve with mixed salad.