Lasagna from scratch is a meal to behold, but if you’re like most people, simmering sauce and making individual strips of pasta aren’t on your nightly schedule. Boxed pastas and store-bought marinaras save a ton of time without sacrificing any flavor. Some Sunday when you have a whole day to kill, build it from the ground up, but on a busy day — in a busy life — have no shame in shortcuts. National Lasagna Day is right around the corner (July 29). You might be headed to your favorite Italian restaurant for a great big piece, but why not do as the Italians do, and make this delicious dish at home! Here are a few tips for baking your best lasagne ever: 1. Careful with your noodles. Building a good lasagna requires a bit of architecture. Lasagna needs a good structure, and the noodles give it all it needs —…