Finely chop the onions and garlic and gently fry in olive oil for 5 minutes.
Finely chop the wild mushrooms and add to the onions once they are thoroughly softened.
Season the mushrooms with salt and pepper.
Set aside to cool completely.
Cut steaks into 3 x 3 cm cubes and make a small cross in the top of the steak cubes. Open the cross and place in a mozzarella ball.
Once the mushrooms are cool, place a table spoon of the mixture on each cube and wrap it in a piece of bacon.
Cut the puff pasty into rectangles place the steak on a piece of puff pastry and then lay a second piece on top of the meat.
Brush then top layer of pastry with milk and place in over at 180 degrees c for 20 minutes.
Serve with a selection of roasted vegetables.
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