Preheat the oven to 180 degrees celisis. Line a baking tray with baking paper and lay 2 of the wraps on top of the paper. Spread the tomato puree with a butter knife across one wrap, leaving a few centimeters from the edge of a wrap (for a crispy pizza crust). Place 2 slices of mozzarella on top of the tomato puree. Add the pepper, sweetcorn and cheddar.