Have your butcher pick out a chuck roast for you.
Season both sides.
We like to use Lindberg-Snider Porterhouse & Roast Seasoning.
Set meat aside.
Mix your french onion soup mix in a crock pot.
(follow the instructions on your soup mix)
Place the roast in the crock pot.
Cover and cook on low for 6 hours.
You can cook it on a higher temp for less time but I don't recommend it. Slow cooking makes for a yummier pot roast.