This classic dish features tender beef fillets wrapped in a buttery puff pastry with a savory mushroom duxelles and a hint of prosciutto. Perfect for special occasions or a gourmet dinner at home.
	
    
    	
    		Directions
    	
					Step 1
			Preheat the oven to 220°C (425°F).
					Step 2
			Season the beef fillets with salt and pepper.
					Step 3
			Heat the olive oil in a pan over medium-high heat. Sear the beef fillets for 1-2 minutes on each side until browned. Remove and let cool.
					Step 4
			In the same pan, add the mushrooms, shallots, garlic, and thyme. Cook until the mixture is dry and the mushrooms are browned, about 10 minutes.
					Step 5
			Lay out the prosciutto slices on a work surface. Spread the mushroom mixture evenly over the prosciutto.
					Step 6
			Place each beef fillet on top of the mushroom mixture. Wrap the prosciutto around the fillet.
					Step 7
			Roll out the puff pastry and cut into 4 equal squares. Place each wrapped fillet onto a square of pastry.
					Step 8
			Brush the edges of the pastry with the beaten egg yolk. Fold the pastry over the fillet and seal the edges.
					Step 9
			Place the wrapped fillets seam-side down on a baking sheet. Brush the tops with more egg yolk.
					Step 10
			Bake in the preheated oven for 20-25 minutes, or until the pastry is golden brown.
					Step 11
			Let rest for 5 minutes before serving.