Three ingredients and minimal prep sounds good to me, especially on a weeknight. I got this recipe from a fellow poster on the Hungry Onion message board. You take a pork tenderloin (or two if that is what comes in the package), rub it/them in Chinese Hoisin sauce, and place in a roasting pan over a bed of Vidalia onion. Cover with foil; bake for 30 minutes on 325, remove foil, up temperature to 400, and bake for another 15 minutes. Done.
While I was told the onions would caramelize during all of this, they ended up needing a little bit more heat on the stove-top with all of the drippings while the tenderloin rested for a few minutes. Other than that, the pork was tender and juicy, and when placed atop garlic mashed potatoes, made for a wonderful combination of flavors. You could serve this with Asian noodles or really anything else for that matter– the Hoisin is not so overpowering that this became a “Chinese dish”. Just save some extra Hoisin for dipping.