You can prepare this recipe in advance. Cover unbaked dish with plastic wrap, and refrigerate up to 24 hours. Let stand at room temperature 30 minutes before baking.
If top of the bake browns too quickly, cover with foil for the rest of the bake time until cooked completely through.
To reheat, cover with foil to prevent it from drying out. Place in 325°F oven for 30 minutes.