My husband likes the potatoes a lot and I have seen a potato recipe for him to cook. In the video the host baked it at 375 degrees but I want to bake it at 325 degrees oven with a ham. Can anyone tell me what will be changes that I need to follow and for how long I have to cook my scalloped potato recipe in it? Can I add some extra cheese in it as my husband likes cheese a lot? Will the combination of potato and cheese make the calories level go high?