"Cut them up and put them on salad," my husband said. Ha ha.
Awash in paranoid thoughts about inhaling spores and contracting deadly lung disorders, I took the plant outside, dumped the soil (which, except for the top, was coated with yellow spots all over), bleached and washed the pot, and repotted the jade with fresh soil. I also vowed to myself not to water the plant so often. Fungi like it moist, and the jade, being a succulent, probably can handle dry soil.
Then later today I Googled "yellow mushroom houseplant". And...oops. No need to freak. Apparently the shrooms are harmless, cute, lovable, and probably even healthy for the soil. Sorry, mushrooms. I overreacted. Next time I'll let you stay.
This message paid for by the Fungi Special Interest Groups of America.