Beef wellington | MummyPages.uk

Ingredients

• 1kg fillet of beef, well trimmed
• 1 tbsp. oil
• 75g butter
• 1 small onion, finely chopped
• 2 shallots, finely chopped
• 350g mushrooms, finely chopped
• Salt and freshly-ground black pepper
• A pinch nutmeg
• 500g store-bought puff pastry, defrosted if frozen
• 1 egg, beaten