I made an Easter pie, but it was a different version, mine was cheese and other ingredients baked in an open deep dish pastry crust. Your recipe is somewhat similar to a "chop-chop" or garbage bread which i often make. I think your looking at a disaster trying to cook it that high on a steel. I would opt for placing it on a cookie sheet and baking around 375-400 dergee range, there are a lot of ingredients which will smoke/burn at 500+, especially with using a steel plate.