24 minutes ago, Smithy said:So: if you were to make a baked potato casserole with bacon, mayonnaise, sour cream and cheddar cheese, how would you go about it?
I think the big question is type of potato and whether you pre-cook the potatoes before baking the casserole? I think I would pre-cook. Maybe like this recipe, for Fully-Loaded Twice-Baked Potato Casserole Though I have not tried it, it does sounds like what you are trying to achieve. What is the mouth feel of the dish you had? What texture did the potatoes have?