I make this Sweet potato casserole for Thanksgiving, it has a streusel like topping. Usually I can bake this at the destination, but this year I need to bake at home and take. I have a baking dish that has a heat resistant plastic cover and an insulated carrier. I know that the topping will get soggy if it is tightly covered after baking. How can this be avoided?
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How long are you traveling, and how long will it be between when you take it out of the oven and when you serve it?– GdDNov 22, 2016 at 18:17
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Actual car time about 15 minutes. Not sure how long it will be till it hits the table, maybe around an hour.– Debbie M.Nov 22, 2016 at 19:06
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Are you planning to keep the casserole warm, reheat it or just serve at whatever temperature it has at dinner time?– Stephie ♦Nov 22, 2016 at 20:54
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1 Answer
Assuming that you want to serve the casserole hot and the streusel crispy, keep the casserole and the streusel separate until almost serving time.
This means you will have to bake the streusel on a cookie sheet until crisp and ready, then let them cool uncovered and transport them in a separate container.
Your casserole base contains eggs, so it must be baked. You want to avoid a "skin" or "crust", so cover with foil at least part of the time or even the whole 30 minutes. (Depends a bit on how wet the mash is.)
Depending on the logistics at the destination, either keep your casserole warm in your carrier or pop it in the microwave for a bit to gently(!) reheat it.
The right time to put the streusel on top of the base is a short while before serving - long enough that the hot mash can warm them up and that they can get a tiny bit soft at the bottom (more authentic!) while staying crisp on top. A few minutes should suffice, but a quarter of an hour would still be fine. But keep the casserole uncovered.
