Pre-heat oven to 250 f
Dry and season roast with salt and peppers
Add oil to large Dutch oven and heat to medium-high
Sear all sides of the roast
Set roast aside
Sauté onions until softened
Add garlic and cook for another minute
Place roast over onions
Mix Worcestershire sauce with beef stock
Pour mixture around roast. Do not immerse the roast - leave at least ½ inch exposed.
Spread onion soup mix over the roast
Cover Dutch oven and cook for two hours.
After two hours turn off oven. Do not open oven.
Leave in oven for at least 30 minutes.