2 fennel bulbs, trimmed Fennel bulbLike Marmite, fennel is something that you either love or hate - its strong aniseed flavourâ€¦
3 tbsp olive oil Olive oil ol-iv oylProbably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It'sâ€¦
1kg floury potato, thinly sliced (see tip, below) Potato po-tate-ohThe world's favourite root vegetable, the potato comes in innumerable varieties. A member ofâ€¦
300ml vegetable stock
250g cherry tomato, preferably on the vine
25g parmesan (or vegetarian alternative), finely grated Parmesan parm-ee-zanParmesan is a straw-coloured hard cheese with a natural yellow rind and rich, fruity flavour. Itâ€¦
Heat oven to 180C/160C fan/gas 4. Quarter the fennel lengthways, and cut out and discard the root. Thinly slice the fennel. Heat 2 tbsp of the oil in a large frying pan, season the fennel and gently cook for about 5 mins until starting to soften.
Drizzle a little oil over the base of a 1.5-litre gratin dish. Arrange half the potatoes over the base, then season. Spread the fennel over, then cover with the remaining potatoes. Pour over the stock, season and drizzle with the remaining oil. Scrunch a piece of baking parchment around the edge of the dish to make a seal, then bake for 1 hr. Can be made a few hours ahead up to this point.
Remove the dish from the oven and put the tomatoes on top. Scatter over the Parmesan and return to the oven for 20 mins until the top is golden.