I'd say season it up and vacuum seal it for a 24hr run in the sous vide. Since we got one it's been the best thing we've used.
If oven try this if you like
INSTRUCTIONS
Preheat oven to 300 degrees.
In a 9×13-inch glass baking dish or roasting pan, lay sliced onions and peppers on bottom.
Mix tomato paste, Agave or honey, all the dried spices, Rocket Fuel and the chili sauce. Smear all over beef and set beef over peppers and onions. Pour the beef stock around the sides of the beef.
Cover with parchment paper and then foil, sealing tight.
Roast in over for three hours or until fork tender. Check after three hours and cook for another 30 minutes if not falling apart tender.
With two forks, shred meat and mix with all liquid, cooked onions and cooked peppers.