Seems almost like sacrilege, doesn't it? How can Italian meat sauce (or gravy, if you prefer) be quick? Well, the folks at Cook's Illustrated have figured it out. Use only the highest quality canned tomatoes to make this, and don't use anything but 85% lean ground beef.
You know that you can't see their recipes online without an online subscription, but if you google Simple Italian-Style Meat Sauce, you'll find a few folks who don't mind ignoring their copyright.