Hebeloma crustuliniforme, commonly known as poison pie or fairy cakes, is a gilled mushroom of the genus Hebeloma found in both Old and New World countries.

The gills are pale grey-brown, with orange to brown spores and exude droplets in moist conditions.

[1] The species' specific name derives from the Latin crustulum ('little biscuit').

H. crustuliniforme has been found in 18 countries, including most parts of Europe, both coasts of North America, and less frequently in Victoria, Australia.

[3] A common mushroom, H. crustuliniforme can be found in open woodland and heathland in summer and autumn, though may also be found in winter in places with milder climates such as California.