Mitch wrote:

Spiral ham at 275, au gratin potatoes at 425.

What should I do?

Check this... nothing up my sleeves...

Bake the potatoes first.
Then lower the oven temperature.
Place potatoes aside while ham heats.
Then for the last 30 minutes place spuds back into oven with ham to
reheat.

Like MAGIC!

Whoa, that's not my sleeve, you're peeking up my pants leg...
got a magic wand up there, for sawing the ladies in half! hehe

Sheldon Tricks