Found six of them in my little outdoor mushroom nook where I'm trying to cultivate shiitake and maitake. The smallest was about fist sized and the largest was about a foot in diameter and about 5 pounds!
Fried them in olive oil last night for supper... added a touch of salt and some freshly ground pepper, yum! After they started to cool off, the smell and taste of the olive oil got a bit obnoxious so I didn't finish them all off. They have the consistency of fried tofu and a mild mushroom-y taste. I think if/when some more pop up, going to fry them in (much less) butter, put them on a bed of rice with a little soy sauce and maybe some fresh veggies (snap peas, broccoli, baby corn, carrots, hmm...) on the side too.