I don't know of any other mushroom in the woods that looks like them, so I am confident when I find 'em that they are OK to eat. I just put some butter in a pan, slice/dice them up (after washing them off and cutting away any dirt/debris)and saute them until they barely start to turn brown. I'll saute them with a lid on, until they reduce in volume by at least 50%, then take the cover off to let the accumulated water boil off.
They freeze well, all I do is clean, cut 'em up and throw them into ziploc bags, then toss 'em into the freezer. One bag = one portion.
What I don't eat that night, can be used in an omlet the next morning.
http://theforagerpress.com/fieldguide/octfd.htm