Lasagna is assembled and "resting" in the fridge. My least favorite way to do this dish is to proceed from step 1 to sitting down to eat in one sweeping movement. When I do that, by the time we sit down to eat, I don't even want to look at it. This way, I get to "rest," too, before proceeding with the next step (baking, which is the easy part). My absolute favorite way to do lasagna is to assemble it, freeze it, and forget about it for a few days. Then - VOILA! - it's like a gift.