Put onions,breadcrumbs and egg into bowl mix well.Mix the undiluted soup,horseradish,Worcesterchire Sauce and mustard together in a separate bowl until well combined.Add 4 tablespoon soup mixture to breadcrumb mixture, stir in the meat or meat substitute and mix well.Divide into 6 portions and shape into patties.
Heat oil in large frying pan,add the patties and cook over medium heat for 3-4 minutes on each side until just browned.Stir the stock into remaining soup and pour into frying pan,reduce heat, cover and gently simmer for about 12 minutes, add mushrooms.Garnish with parsley and serve immediately.
I served this with leek and garlic mashed potatoes. Boil potatoes, in separate pan boil 3 leeks chopped,chopped finely, 3 clove garlic chopped finely in a little milk until tender. Strain and set milk aside.Add the vegetables to potatoes, add butter season with nutmeg.Use the milk to mash potatoes to consistency you prefer.
