Ingredients

• 2 tablespoons olive oil
• 400g beef chuck steak, trimmed, diced
• 100g onion, finely chopped
• 4 lamb kidneys, core and sinew removed, meat chopped
• 100g button mushrooms, quartered
• 25g plain flour
• 1 teaspoon Vegemite
• 400ml Massel beef stock
• 200ml dark beer (such as Guinness)
• 1 bay leaf
• 4 thin slices prosciutto
• Chopped flat-leaf parsley, to garnish

Tart shell

• 1 cup (150g) plain flour
• 1/2 cup (175g) wholemeal flour
• 1 teaspoon chopped thyme
• 125g unsalted butter, chilled

Method

• Step 1 To make tart shells, place the flours in a food processor with the thyme, butter and a pinch of salt. Process until the mixture resembles fine breadcrumbs. Add a 1/4 cup of chilled water and process until the mixture comes together to form a smooth ball.
• Step 2 Wrap in plastic wrap and refrigerate for 30 minutes.
• Step 3 Divide the pastry into quarters and form into 4 small balls. Roll each ball out on a lightly floured board, then use to line four 10 x 3cm loose-bottomed fluted tart pans. Refrigerate for a further 30 minutes.
• Step 4 Preheat the oven to 190°C.
• Step 5 Line the pastry cases with non-stick baking paper, fill with rice or pastry weights and bake for 10 minutes. Remove paper and weights and return to oven for 5 minutes or until golden and crisp. Set aside. (These tart shells can be made 1 day in advance and kept in a sealed container.)
• Step 6 Heat oil in a saucepan over high heat and cook beef in 2 batches until brown and sealed. Transfer to a plate; set aside.
• Step 7 Add a little more oil if necessary and cook the onion over low heat for about 5 minutes or until softened. Add kidneys and mushrooms and fry over medium heat, stirring, for a further 2 minutes. Return steak to pan with the flour and cook for 1 minute. Stir in the Vegemite, stock, beer and bay leaf. Bring to the boil over high heat, then reduce heat to low, cover and cook for 1 hour. Remove the lid and allow the liquid to reduce for about 10 minutes until quite thick.
• Step 8 Preheat oven to 180°C.
• Step 9 Meanwhile, line a baking tray with baking paper. Place slices of prosciutto on tray and bake for 5 minutes or until crisp. Place pastry cases on a separate baking sheet and reheat for 5 minutes. To serve, place a warm pastry case on each plate and spoon in the steak and kidney filling. Sprinkle with parsley and place a crisp shard of prosciutto on the side. Accompany with mashed potato.