I plan to make an apple pie today, but will be serving it tomorrow. (Unfortunately, my schedule tomorrow won't allow me to make it fresh then). I would like to serve it warm with ice cream, but would appreciate suggestions about rewarming it. It has a crumb topping, not a double crust. I have read that pies should be rewarmed in a 350 degree oven, but for how long? Also, should I cover it with foil so it doesn't get too dark? I have looked in Joy of Cooking as well as the Pie and Pastry Bible to no avail, so I am asking you, Chowhounds!