Mustard Beef with Mushrooms

g/14oz of extra lean ground beef

g/8oz of baby Portobello mushrooms (or chestnut mushrooms)

red onions, sliced finely

garlic crushed

ml/2 cups of beef broth/stock

wholegrain mustard (1.5 syns)

arrowroot flour (or cornstarch or tapioca flour) (1.5 syns)

sprinkling of thyme

balsamic vinegar

tomato puree

salt and pepper to season

fresh chopped Italian parsley to serve