Season with salt and freshly ground black pepper and set aside. Place the olives ... parmesan in a bowl and sprinkle over the top of the gratin. Drizzle over the remaining tablespoon of olive ...

For this rich and creamy potato gratin, the potatoes are par-boiled in ... over a medium heat until golden and crisp, then drain and set aside. Grease a large, shallow baking dish with the butter.