Mushroom Wellington Mushroom Wellington is a vegan twist on a traditional British dish known as “Beef Wellington”, it’s a casserole bake, basically. One usually bakes beef in the middle of a pastry wrap, covering the beef with all sorts of spices and sauces and the like before covering the dish in pastry and baking it in the oven. Mushroom Wellington essentially does the same thing, but with mushrooms as opposed to steak, use Portobello mushrooms for best results, layered with spinach and cooked on a…