Preheat the oven to 180°C. Slice all the cherry tomatoes in half and place in a roasting tray. Sprinkle over the oregano and a little salt and pepper. Drizzle 1 tablespoon of oil over the tomatoes and roast in the oven for 10 minutes then set aside. Turn the oven up to 200°C.

Cut the yellow pepper into thin slices and finely slice the red onion. Put 1 tablespoon of oil in a medium sized saucepan and fry the pepper until soft then set aside on a plate. Now fry the red onion until soft and set aside.

Mix the cheese and sour cream together in a bowl and add the crushed garlic and a little salt and pepper.

Lightly dust a clean work surface with flour, Cut the dough in half and roll the first half out into a large circle around 1 cm thick. Place the pizza base on a large baking tray sprinkled with a tablespoon of polenta. Spread over half of the sour cream/cheese mixture evenly leaving a boarder and bake in the oven for around 5 minutes until the cheese is bubbing and staring to brown, remove from the oven. Starting in the centre place half of the red onions in a small circle then follow with a layer of pepper, radishes and tomatoes. Place back in the oven for 2 minutes then remove and sprinkle a layer of rocket around the edge of the pizza. Repeat the same steps with the second half of dough. Cut into slices and enjoy.