Ingredients
Instructions
- Preheat the oven to 300F/150C/gas mark 2.
- Take a heavy-bottomed dish or an ovenproof gratin dish (a Le Creuset is ideal - the potatoes tend not to catch), and grease it will with some of the butter.
- Layer the potato slices in the dish, slightly overlapping each other, seasoning lightly with the salt and pepper, and sprinkling a liberal amount of cheese on each layer.
- Sprinkle cheese on the top of the last layer.
- Put the double cream, garlic and sprigs of thyme in a pan and bring to them gently to the boil, then remove the thyme and pour hot cream over the potatoes.
- Dot the top of the gratin with the remaining butter and some extra cheese if you wish, and bake for about 1 hr to 1 1/2 hrs, or until the potatoes are soft, and the top is crispy and golden brown.
- Serve bubbling hot as a main meal or as an accompaniment.