Aren't those KitchenAid attachments great, Pozees? I use mine a lot, especially in canning season. We prefer homemade cranberry relish as well, tho what I make is more of a jam than a jelly. I just whiz 'em in the food processor. Haven't tried it on toast, but we have it with turkey, chicken and pork...makes a nice tangy accompaniment.
Wow, that's a lot of plums, CS! We got our first harvest from our tree this year and there was enough to make a batch and a half of jam. I've never tried plum butter...do you keep the skins in the mix, or use just the flesh? All I've ever done with plums really is make jam...and it's just about our favorite jam of all time.
Yes, I love my Kitchen Aid and its attachments! Last year I made homemade sausage with it, just loose no casings, and it was delicious. This year I want to try using casing. The poor KA usually spends the entire summer and well into fall gathering dust, I swear it actually thanked me for firing it up yesterday! LOL