Peppered Fillet of Beef with Port Sauce, Dauphinoise Potatoes and Green Beans with Shallots & Sherry Vinegar (Serves 4)

This recipe is great for entertaining over the festive period. I first shared it back in December ’20 but I’ve been cooking it for years. I particularly like that the sauce can be made in advance, so there’s no last minute rush. I like to serve it with Dauphinoise Potatoes, I rather like the cheese version for this dish (recipe below), but you could also serve it with my simpler recipe without cheese (recipe here). In addition, a great accompaniment is Green Beans with Shallots & Sherry Vinegar (below) or simply Sautéed Spinach (recipe here).
2 x fillets of beef, 450g each – nice even pieces
2 teaspoons black peppercorns, lightly crushed
Olive oil
400ml port
2 sprigs of thyme
2 cloves of garlic, halved
300ml beef stock
2 teaspoons cornflour made into a paste with 2 tablespoons of the port
Sea salt and black pepper
- Season the beef with salt and evenly coat it with the crushed peppercorns.
- Heat a little olive oil in a frying pan and brown the beef all over, then transfer to a roasting tray.
- Place the beef in a preheated oven, 180’c fan, for about 20 minutes for medium rare (a meat thermometer will read 55’c). Move to a plate to rest.
- Meanwhile put the port, thyme and garlic in a small saucepan and boil to reduce by half, then whisk in the beef stock and the cornflour paste. Cook, whisking for about 1 minute until the sauce has thickened.
- Check the sauce for seasoning, adding any juices from the resting beef.
- Slice the beef into thick slices and serve with the sauce, Dauphinoise Potatoes and Green Beans with Shallots & Sherry Vinegar (recipes below).
Staple Side Dish – Dauphinoise Potatoes with Gruyére Cheese (Serves 4-6)

This is the second recipe that I have posted for Dauphinoise Potatoes on Menu Mistress. This recipe is the richer of the two and is more unctuous. I particularly like it with Peppered Fillet of Beef (above), but if you prefer a simpler Dauphinoise recipe, without cheese, you can find it here.
I found this recipe for Dauphinoise Potatoes with Gruyére in the cookbook, ‘At Home in the Provence’ by Patricia Wells, who in turn took it from renowned French chef, Joël Roubuchon – so it comes well endorsed!
500ml whole milk
250ml double cream
125g grated Gruyere cheese
1 kg firm fleshed potatoes (such as Charlotte), peeled and sliced very thinly
1 plump clove garlic, peeled and halved
45g unsalted butter, diced
Freshly grated nutmeg
Sea salt and black pepper
- In a large saucepan bring the milk to boiling point. Add the cream and three-quarters of the cheese. Stir to blend and melt the cheese. Season which salt, pepper and a grating of nutmeg. Add the potatoes and mix well with a wooden spoon. Cook over a low heat for about 20 minutes until the potatoes are soft.
- Rub a baking dish with the garlic. Transfer the potatoes and their liquid to the baking dish and sprinkle with the remaining cheese and the butter.
- Place in a preheated oven, 190’c fan, for about 1¼ hours.
- Serve immediately.
Green Beans with Shallots & Sherry Vinegar (Serves 4)

This turns the humble bean into something really special, and it only takes a few minutes! The recipe is from Rachel Allen’s cookbook, ‘Recipes From My Mother’.
300g French green beans
25g butter
1 tablespoon olive oil
50g shallots, peeled, halved and thinly sliced
1½ teaspoons sherry vinegar
Sea salt and black pepper
- Place the beans in a saucepan, cover with boiling water and cook for 3-4 minutes until just tender (al dente). Drain and keep to one side.
- Add the butter and oil to the empty saucepan, when the butter starts to foam add the shallots with the vinegar and cook for a minute or so over a medium heat.
- Return the beans to the pan and toss in the shallot butter. Season to taste and serve.
