Another simple and lovely recipe, a little adapted, from Jamie Oliver. As I'm vegetarian, I've changed from Chicken Breast/Fillet to Quorn Pieces, but of course, you can still use the chicken, turkey would work too. Chicken (Quorn) Pie with Wholegrain Mustard - 1 - 11/2 bags of Quorn Chicken Piece Small piece of butter and a dash of oil - A bunch of spring onions/scallions - 1 heaped tablespoon of flour (additional if you wish to thicken the sauce) - 150g Button Mushrooms (optional - I used…