This rigatoni arrabbiata gets crispy pancetta that elevates the classic spicy tomato sauce into something even better. Garlic and red pepper flakes cook in the rendered pancetta fat before crushed tomatoes turn into a bold, spicy sauce, and the rigatoni gets tossed in with a splash of starchy pasta water for a silky finish that clings to every ridge. It's a fast dinner, ready in about 35 minutes, but it tastes like something you spent a lot more time on.