Some food is better “leftover”.
Lasagna, baked and served from the oven is an example. The layers slide.
I prefer to bake ahead of time and reheat.
Tuscan lasagna has no ricotta or mozzarella.
Simply Tuscan sugo(ragu), bechamel and parmigiano.
I use dry pasta and “wet” sauces.
The traditional lasagna from Bologna is made with layers of spinach pasta.
Fresh pasta , boiled before making the lasagna is the best. It’s more delicate.
Remember, in Italy, it’s a first course.