Ultimate cheesy chips

Method

1. Thinly slice the potatoes and put in a large bowl of cold water to soak for 15 minutes. Heat the oven to 200°C/ 180°C fan/gas 6. Put 2 large baking trays in the oven with a generous glug of rapeseed oil on each. Drain the chips and pat dry on kitchen paper. Put in a large bowl and sprinkle with the polenta, tossing to coat.
2. When the oil is hot, spread the chips out evenly on the hot trays. Sprinkle over sea salt flakes and bake for 35-40 minutes, tossing halfway through, until golden, crisp and tender. Sprinkle over the mozzarella and return to the oven for 5 minutes more to melt the cheese. Eat straightaway with the cheeseburger or on their own.