I get my kids to eat portabellos by first lightly sauteing them gill side down, then building them up like a pizza. a layer of spinach for the first layer, topped with chopped tomatoes, fontina cheese, and a few italian herbs. broil it until the cheese is good and melted and lightly browned and enjoy
Tried this today for lunch - me and the man're taking tenative steps into the veggie world in order to support our daughter's choice when she's home from school. It's a bit of an adventure learning new methods of putting flavors and textures together but this is a winner! For 2 'srooms I mixed up abt 2/3 can of organic fire roasted tomatoes with pizza spices then topped with cheese, black olives and for some crunch, fresh green beans cut in 1/4" pieces. It made a more satisfying mouthful than the original pizza spin and had all the flavor. I think that if you're really hungry one wouldn't fill you and you'd better provide for a second or have a satisfying side dish. It's definately something I would recommend to convert a meat-eater tho. Didn't miss the meat and didn't have any slippery squishy mushroom goo.