340 grams lean ground beef
8 whole-wheat hamburger buns, toasted if desired
5 diced plum tomatoes
2 cups of finely chopped mushrooms
2 tablespoons of all-purpose flour
1 large onion, finely diced
1/2 cup water
1/4 cup cider vinegar
1/4 cup chilli sauce
1/4 cup tomatoe sauce
1) Crumble beef into a non-stick skillet. Cook over medium heat until beef starts to sizzle.
2) Add onion and mushrooms and cook –stirring occasionally. Break up the meat with a wooden spoon, until the vegetables are soft and the moisture has evaporated. This should take 10 minutes.
3) Add tomatoes and flour and stir to combine. Stir in water, vinegar, chilli sauce and tomatoe sauce occasionally – until the sauce is thickened and the onion is tender. Do this for 10 minutes.