cooking.nytimes.com
This dish is one recipe calling for leftover pasta that is actually worth planning for. It's portable, it's endlessly versatile, and it's practically foolproof. Substitute almost any cheese for the Parmesan (or leave it out altogether) and toss in any cooked vegetable or meat. Make it your own. One last bit of advice from Mr. Bittman: “The key to extreme enjoyment is to make sure that some ends of pasta pieces protrude from the top of the mixture when you put it in the oven. They will become crunchy, giving the leftover pasta yet one more pleasant dimension.”