Take the pastry out the fridge, you want this at room temp when you start to fill, pre-heat your oven to 180 degrees, and line a baking tray
For the gravy add the veg, water and seasonings to a pan and bring to the boil, leave to simmer for around 15mins and set aside
Cut up the steaks into small chunks, and fry in a pan with a little oil, for around 8 mins (the packet instruction)
Add a tablespoon of flour to the steak pieces and coat well, then take a spoon of just the liquid from your stock pan add that to the floured steaks pieces and stir together well, and add another spoon of the liquid and stir well, repeat this until you have a lovely thick gravy in amongst the steak.
Unroll the pastry sheet and cut into 6 squares, add a tablespoon or so of the steak mixture onto 3 of the squares
Wet the edges around the mixture, and put on the lids of pastry
Secure closed with a fork all around, and for the ultimate steak bake experience score some diagonal lines across the top
Mix together the milk and maple syrup, and use this to glaze your pastry, then put in the oven until golden brown – around 10 minutes.