Pat the chuck roast dry and season all sides with the seasoning mix.
Heat oil in a Dutch oven or oven-safe pot over medium-high heat.
Sear the roast on all sides until it has a nice char. Remove and set aside.
Add the chopped onion and garlic. Cook for 2-3 minutes.
Stir in the tomato paste and cook for another 2-3 minutes.
Pour in the dry red wine and stir, scraping up any browned bits from the bottom of the pot.
Return the roast to the pot.
Add the beef broth, bay leaves, and thyme.
Cover and bake at 300°F for 2 hours.
Take out of oven and add your vegetables and return to the oven for 1 more hour.
You can leave baby potatoes as is or use them to make mash potatoes.
Remove the roast and set aside.
In a small bowl, mix: 1 tbsp cornstarch, 2 tbsp water
Stir the cornstarch slurry into the sauce until thickened.
Return the roast to the pot, shred the meat, and serve.
