Plum torte or tart, and Mitered Square Jacket progress

This is the Marian Burros recipe that appeared any number of times in the New York Times, and was reprinted in other people's collections. 

I think my copy is from Arthur Schwartz, who credited her and pointed out that it sometimes appeared as tart, sometimes as torte. I think tart's a misprint, because this has a cake dough, not a pastry one.

Anyway here it is, been waiting ages for plums to make it with. They've been hard to find for a couple of years, wonder if there were late frosts cutting back the harvest.

I divided the butter half and half Kerrygold and regular supermarket, mainly because I forgot to thaw out butter to use ahead of time, so I used what was available.

Here's the doings. The lemon juice, cinnamon and sugar are for sprinkling after it's mixed and assembled. The plum pits went out for the squirrels, who will probably run away in top of the fence and bite into them, leaving the shells for me to sweep.

And here's  how it looks with the halved plums studding the batter. One hour at 350°f.

The house smells lovely right now.

And here's the result

I expect Handsome Son and maybe a neighbor or two will help with this.

Meanwhile I've been stitching Mitered Squares. 

It's like stitching your way out of a maze. Very confusing. I think I may be about a third done but who knows.