The Trust Fund Wellington

Editorial working recipe. This method has not yet been independently kitchen-tested by our publication. Follow safe food handling guidance and ingredient labels.

What you shall require

• 1.1–1.3 kg centre-cut beef fillet, evenly trimmed
• 600 g Swiss brown mushrooms, finely chopped
• 2 large shallots, minced
• 2 tbsp olive oil and 30 g butter or lactose-free alternative
• 2 tsp Dijon mustard
• 8–10 thin slices prosciutto
• 600 g gluten-free puff pastry suitable for wrapping, or conventional butter puff pastry
• 1 egg beaten with 1 tbsp water
• Salt, pepper and thyme

How it is done

1. Pat the beef thoroughly dry, season generously, and sear in a very hot pan with oil until coloured on every side. Cool completely, then brush lightly with Dijon.
2. Cook finely chopped mushrooms and shallots in a wide pan with butter and thyme until their moisture has evaporated completely, roughly 18–25 minutes. Cool fully; a wet duxelles will ruin even aristocratic pastry.
3. Arrange overlapping prosciutto on cling film, spread the cold mushroom mixture evenly and roll the beef tightly inside. Refrigerate until firm, at least 30 minutes.
4. Roll the chilled pastry into a rectangle large enough to wrap the beef without thick overlapping seams. Remove the cling film, wrap the beef in pastry, seal edges underneath and chill for 20 minutes.
5. Heat oven to 210°C conventional or 190°C fan-forced. Brush the pastry with egg, score lightly without piercing and roast on a lined tray until golden and the thickest part of the beef reaches your preferred safe temperature, checking with a probe thermometer.
6. Rest 12–15 minutes before cutting with a serrated knife. Serve with a reduced red-wine pan sauce prepared separately and seasonal greens.

The household notes

Choose an even-diameter centre cut: it cooks more consistently than a tapered fillet. A temperature probe is more useful than any amount of inherited confidence.

Gluten-free puff pastry behaves differently by brand and may need patching; verify the individual pack instructions. For a lactose-free version choose suitable pastry and fat.

This is an editorial recipe draft, not a claim of first-hand kitchen testing. Food handling and beef doneness should be checked against current food safety advice.

For safe storage, cooling and reheating, see Food Standards Australia New Zealand. Discuss severe allergens and medically necessary restrictions with affected guests.