The meat is extended with mushrooms here, for extra fibre. DH isn't keen on mushrooms, but loves these little babies.
We love these served in pita bread for a really great tasting low fat/low cholesterol dinner.
Place the onion and mushrooms in a food processor and whizz until finely chopped. Add the beef, breadcrumbs, herbs, tomato paste and seasonings. Process for a few seconds until the mixture binds together but still has some texture.
Divide the mixture into patties ( I sometimes make lots of smaller ones as opposed to a few large ones, as they are easier to cook and stuff into pita bread that way!) and press into burger shapes with lightly floured hands.
Cook the burgers in a non stick frying pan, or under a hot grill , turning once, until evenly cooked.
NB. Please be aware that the mixture is quite soft, so you will need to handle carefully to prevent the burger from breaking up while cooking.