Planning to make potato kugel as side dish with eye of rib roast for Rosh Hashonna. Here is my question - I only have one very large oven. The roast starts out at high heat (400), then gets turned down to 300 for slow roast. The kugel recipe I have suggest 400 for an hour. I am making a 9X13 dish, which might fit in my toaster oven/convection oven. Advice? should I cook at low heat in big oven or make in toaster convection oven? I don't think it would taste good made ahead and re-heated, but could do that as well - suggestions please? Thanks!