This casserole is simple and delicious, and makes a perfect snack during a picnic (bento anyone?)—you should use it as a basic idea for a casserole, since the pasta sauce is the stable and the most important piece of the meal. It's also a very tweak-able recipe! :-)
This recipe is simply amazing — great right from the oven, delicious the next day and really easy to prepare. You can also upgrade it with nuts, raisins and whatever you like in your rolls.