Hard to say, just looking at the top of the cap. Probably not an
Amanita, the stem doesn't look like it has a ring and volvulus. What does the underside look like, gills or spongy? If it is spongy, then it could be in the order
Boletales. If it has gills, there are a lot more possibilities for what it could be. If you really want to hunt it down, go check the keys at the
Mushroom Expert.