Add 350mls of boiling water to the shiitake mushrooms and set aside to soak for at least half an hour.
Prepare all the veg, dice the mushrooms and onions and crush the garlic.
In a large pan, gently fry the onions and garlic for 10 minutes in a little olive oil. Add the shiitake soaking liquid, soy sauce and tomato purée, then add in your raw mushrooms and chopped, soaked shiitake mushrooms. Cook for 15-30 mins until it starts to thicken up and is nicely cooked through.
Allow the mushroom mixture to cool while you prepare your cases. I used muffin trays to make my pies. Cut out a larger circle and press into the case for the base. Prick the base with a fork.
Fill the case with mushroom mixture, then brush the edges of a smaller circle for the lid and press the wet edges down onto the base to create your lid. Cut a slit into the lid to let the steam escape and brush all over with milk to glaze. Bake at 190 C for 20 minutes.
