Boulangère Potatoes

Heat oven to 200C/fan 180C/gas 6. Fry the onions and thyme sprigs in the oil until softened and lightly coloured (about 5 mins). Spread a layer of potatoes over the base of a 1.5-litre oiled gratin dish. Sprinkle over a few onions (see picture, above) and continue layering, finishing with a layer of potatoes. Pour over the stock and bake for 50-60 mins until the potatoes are cooked and the top is golden and crisp.

• 2 finely chopped of Onions
• sprigs of fresh of Thyme
• 2 tbs of Olive Oil
• 1.5kg of Potatoes
• 425g of Vegetable Stock