The original recipe is called Lazy Day Mostaccioli, though I usually use penne - which is basically shaped the same. You throw the pasta in without boiling it first and can prepare this early in the day or the night before - whenever you have time, and it's ready to bake at dinner time.
Here's how I made it yesterday:
I served it with zucchini (also from the garden and sauteed in olive oil) and fresh homemade sourdough bread. Perfect!