Mash up the tomatoes with the peanut butter and chilli to form a
liquid. Put oil in a wok or large frying pan and when hot add the
liquid. Wait until the tomato sauce has started to bubble and going
orange at the sides. Add the spinach and the diced onions. Cook
this, not too hot until all the spinach has melted or 5-10 minutes if
fresh. Add the 1lb of diced mushrooms. Meanwhile cook some brown or
basmati rice.