In a bowl, mix the beef with the pasta sauce, egg whites, and oatmeal.
Next form the loaf on a large sheet of foil then wrap it up. Be sure that it is securely wrapped to avoid freezer burn and place it into an aluminum casserole dish.
When you are ready to prepare this, let it defrost for a few hours. Then, unwrap the meatloaf so that it is uncovered and bake at 375* for 1 1/2 hours.
Using a meat thermometer in the deepest part of the meatloaf it should be at least 165*.
Pour additional pasta sauce over the meatloaf and serve.