Purslane is a very nutritious plant. It is high in vitamins A and C and is loaded with minerals, especially Magnesium . It is also high in Alpha Linolenic Acid, an important Omega 3 Fatty Acid.
I like to eat it raw, and munch on it often as I work in my garden. It has a tangy mucilaginous taste, and also makes a great salad additive. It can also be steamed or sauteed and added to soups or stews. One interesting thing to do is to pickle it, a great way to save it for winter when there isn't any around to pick.