2 hours ago, ElsieD said:I have this shortbread baking pan
To get back to your original question, I'm not sure if you butter it before or not. I have a shortbread mold that bakes one at a time and for that reason I have never used it. I think I know where it is and I think that it still has the original directions with it. I'll see if I can find it.
You should be able to use any of the recipes that have been given here. And I imagine that you would bake it at 325°, as all the recipes say.