3 large yellow onions, halved through the root and thinly sliced
8 sprigs fresh thyme
8 cloves garlic, thinly sliced
2 bay leaves
1 ½ cup dry red wine
3 tablespoon balsamic vinegar
¼ cup honey
1 teaspoon onion powder
1 teaspoon garlic powder
1 cup chicken broth
Directions
Preheat the oven to 325 degrees F. Generously sprinkle both sides of the brisket with salt and pepper.
Heat the vegetable oil in a Dutch oven or large pot set over medium-high heat. Add the brisket and cook, turning once, until browned on both sides, 8 to 10 minutes total. (If the brisket does not fit all at once, cut it in half and sear it in batches.)
Remove the brisket from the pot and set aside on a cutting board. Add the onions, thyme, garlic, and bay leaves to the pot followed by ½ cup of the wine and the vinegar. Cook, stirring often, until the onions soften slightly and the mixture is fragrant, about 5 minutes.
Whisk together the remaining 1 cup wine, honey, onion powder, garlic powder, broth, and 1 teaspoon salt in a medium bowl until fully combined. If you used a Dutch oven, lay the brisket on top of the onions and pour the wine mixture over the top. Cover and transfer to the oven. If you used a pot, transfer the onion mixture to a roasting pan and top with the brisket. Pour the wine mixture over the top. Cover tightly with aluminum foil and transfer into the oven.
Cook the brisket for 2 hours. Remove from the oven, uncover, and carefully turn the meat to the other side. Re-cover and continue cooking until the meat is fork-tender, 2 to 2 ½ hours more.
Remove from the oven and transfer the brisket to a cutting board. Cover loosely with foil and let rest for 10 to 15 minutes before slicing. Locate the thin lines running in one direction along the brisket and use a sharp knife to cut thin slices perpendicular to those lines. Remove and discard the thyme sprigs and bay leaves from the cooking liquid. Use a slotted spoon to remove the onions and arrange around the brisket. Spoon the desired amount of pan juices of the brisket. Serve hot.