By Owen Younger & Julia Banim A reporter was ‘excited’ to try Greggs’ newly returned Vegan Steak Bake, which has recently left pasty fans in a ‘frenzy’ – and has now given their verdict. Back on the menu for a limited time only, following various impassioned petitions, Greggs temptingly describes the much longed for pastry treat as being made up of “layers of golden puff pastry, tasty Quorn pieces, with diced onions and a vegan-friendly gravy”. The bake is also said to be “new and improved, but still as drool-worthy as you remember”. Keen to see whether the veggie-friendly option, which was fi…