- 1 Pre-heat the oven to 190°C, 375°F, Gas Mark 5.
- 2 Lightly butter a large ovenproof dish. Layer the potatoes and onion, sprinkling with Garlic Salt and pepper between the layers. Pour over the stock, cover and cook for 40 minutes.
- 3 Sprinkle with cheese and cook uncovered for a further 35-40 minutes, until golden and potatoes are tender.