What's it?

Fungi. The brown mini polka dots are about the shade of pheasant feathers. Creamy solid flesh.

It’s a type of puff ball, I don’t know the correct name nut if you upload your photos to inaturalist, someone will advise you

I was hoping puffball! Will ask them later. Also will read mushroom expert .com details.

https://www.inaturalist.org/taxa/118139-Lycoperdon-umbrinum

Mushroom Expert's article on puffballs.

The term "puffball," as I am using it here, is not at all scientific; I mean more or less any mushroom that looks like a ball when mature. Typically the interior of a puffball is composed of spore-producing flesh that turns into spore dust as the mushroom matures. When the puffball matures it splits open, or a perforation develops on surface of the ball, through which the spores escape—when raindrops land on the puffball, via air currents, or by some other means...

Hmmm... Seems very uncertain, lots of specie listed in the full article. I guess I am limited to observation this season and hope they show up again. It appears to me to be L umbrinum.

iNatralist's source is Wikipedia? Hmmm...

And to confuse things further, look what showed up in my email from Forager Chef. These appear to usually be smaller than what I have. Mine appear to be growing in grass, but I know that they may be on dead plum roots... Sigh.

His article does do better describing the toxic look alike though.