Casseroles are perfect winter food: they require long, slow cooking and are warming and comforting. They are also ideal if you are cooking for a large number of people because the quantities can easily be increased. Furthermore, if you are entertaining you can make your casserole ahead so that on the day it only requires reheating and you can concentrate on spending time with your guests.

Despite knowing all of this, for me there’s a problem: I hate making casseroles because I hate the meat-browning stage of the process. My kitchen is always left with a film of grease on every surface and my hair looks like I’ve spent the day working at the local chippy.

Browning the meat for a casserole, we are told, seals in the juices and assures flavour, so it probably isn’t a stage we should skip. But what if we could? One of my Aga recipe books suggests browning the meat for a casserole in the roasting tin in the roasting oven, which seems to me to be the answer. After all, you need a high temperature and the Aga roasting oven is hotter than the highest setting of most conventional ovens.

Then the other day this recipe for roasted lamb ragù caught my eye in the Waitrose Food Magazine under the heading “A Genius New Way to Cook”; you roast literally everything together in the oven, including the meat. Waitrose says you can try it with other combinations of meat, spices and herbs, and I’m thinking of trying to make one of my favourites – boeuf bourguignon – in this way. Anyway, this ragù was absolutely delicious and I will definitely be making it again and using the same method for other combinations of ingredients. (She says, with a flick of her ungreasy hair.)

Roasted Lamb Ragù

Serves 4

(Pre-heat conventional oven to 200ºC)

Ingredients

• 2 leeks, halved lengthways and finely sliced
• 2 carrots, finely diced
• 2 celery stalks, finely diced
• 2 garlic cloves, crushed
• 1 cinnamon stick
• 1 clove
• 1 tsp ground coriander
• 2 bay leaves
• A few thyme sprigs
• 1 tsp honey
• 4 anchovy fillets
• 900g lamb neck fillets
• 250ml red wine
• 250ml chicken stock
• 2 x 400g cans chopped tomatoes

Method

• Toss the leeks, carrots, celery, garlic, spices, herbs, honey and anchovies in the large Aga roasting tin. Season
• Season the lamb neck fillets and lay on top
• Place the tin on the third set of rungs in the roasting oven and roast for 45 minutes to 1 hour, turning everything at least once. You want the meat to be browned and the vegetables soft and turning golden
• Stir in the wine, stock and tomatoes and place in the simmering oven for 2 or 3 hours. You know the drill: no harm will come to it if left for longer. Mine was in the oven all afternoon
• (Or turn a conventional oven down to 160ºC, cover the tin loosely with foil and roast for one hour and 30 minutes.)
• Roughly shred the meat, turning it in the juices and put the tin back in the roasting oven for 20 minutes or so, stirring occasionally until the meat is browned in places and the ragù is glossy and thick
• (Or turn the conventional oven back up to 200ºC, remove the foil, shred the meat as above and roast for a further 30 minutes.)

We had ours with delicious sourdough bread, purchased that day from the wonderful Hart’s Bakery in Bristol, and a green salad dressed with extra virgin olive oil and balsamic vinegar. If we hadn’t had delicious, fresh bread to hand, I’d have served the ragù with pasta. Tagliatelle would be perfect.