@ewkaw I have a mushroom at home that looks like it: the fly amanita phalloides. A mushroom as pretty as it is toxic. Small difference, ours also has pretty white spots.
https://www.gerbeaud.com/nature-environnement/champignons-dangereux-mortels,1740.html
I am not sure if this was Amanita of any kind. It was still pretty even without the spots.