I need to prepare a lasagna two days ahead of my wife's book club gathering at our house. I'll be gone, so she'll have to heat it up or put it in the oven to bake. (She doesn't cook.) It happens to be the Cooks Illustrated Spinach Lasagna with Mushrooms recipies. It uses no-cook noodles dipped briefly in hot tap water, cottage cheese instead of ricotta and a bechamel sauce, not a tomato sauce.
The simplest preparation would be for me to completely bake it and put it in the fridge for two days. Then it can be reheated in the oven in the full lasagna pan or in pieces in the microwave.
I am wondering if it might be better to assemble it uncooked and leave it in the fridge. Then she can simply bake it on the day it will be served. But this may leave the noodle sheets two days to get soggy or the bechamel to separate.