Start by chopping the onion, leek and garlic then add to a non stick pan and fry for 5 minutes before adding in the dried sage and stock cube & water
Add in the vegan chicken (if using from frozen, pop in the microwave for 3 minutes first) then stir vegan cream and dijon mustard and allow to simmer for a further 5 minutes
Preheat the oven to 200ºC fan
Grab a baking dish, I opted for a 20x30cm dish, line with just over 1/2 of the puff pastry sheet, spoon in the filling then using the other piece of puff pastry, create a lid pinching together the edges to seal it
Score on a pattern on top, feel free to get creative, brush with the tamari and pop in the oven to bake for 35 minutes, checking on it after about 25, if the pastry is turning too brown on top, add a piece of foil or baking parchment loosely over the top until finished baking
Serve up hot, along side some steamed veggies and enjoy!