Bea, I about died laughing that he wants the fruit cake recipe. Is he getting a jump on having the new wifey whip one up and store it for 11 months? I can't see that happening. I suspect it's something he was missing from his past holidays w/you and he thought he'd ask for it. I seriously doubt he or the wifey will be doing any baking of that sort.
As for him (again) bringing up old issues, he needs to go cry himself a river and leave you alone. He doesn't get it...you are divorced and you do not need to be tarred and feathered each and every time he posts to you. Sounds to me like Bunny Foo Foo is not a happy camper.
He's forgotten that your sons are grown and if he wants a relationship w/them, that on him to try to rebuild the bridge he destroyed years ago.
He's using any and every excuse to keep the communication going. Next, he'll come back and want something from your house.
RL, Your xh is completely off the wall too. He's doesn't get it either...you are divorced and under no obligation to provide him a room in your home. The Holiday Inn Express is right down the road. LOL!
I'm thankful mine has been quiet, but I suspect he's in the process of relocating. It's been peaceful and I hope it stays that way.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.