It's no secret that one of my favorite things to eat is pasta, and one of my favorite things to do with leftover pasta is to fry it. You take a plate of leftover pasta that's already had sauce added to it, and you fry it in olive oil and fresh garlic. If you've never done this, you really, really need to. This batch I made had rigatoni pasta and pepperoni with my homemade sauce.
You could even make this with, ugh, jarred spaghetti sauce though I never have and never will.
