Help Me ID this Mushroom!

I found these big brown mushrooms growing out of a log that had been inoculated with edible mushroom spores about 2 years ago...
only problem is, i wasn't the one who stuck the spores in there and I have no idea which types of mushrooms they might be.... or if they are from the spores at all. The logs were already here at the Luck Cabin when i moved in.

Can anyone help me figure out, if this is an edible mushroom?
here are some other viewpoints... side and underneath, showing the gills....
The brown color is very rich and healthy looking... these mushrooms are also really large and round - thick (but not as thick & heavy as a portabella).

XoXoxoOX