My Favorite Pot Roast with Tomatoes and Rosemary

• • • 1 boneless chuck roast, about 3 ½ pounds
    • Salt and pepper
    • 2 tablespoons extra-virgin olive oil
    • 1 medium onion, chopped medium
    • 12 ounces petite baby carrots
    • 1 rib celery, chopped
    • 10 ounces white mushrooms, cleaned and quartered
    • 4 medium garlic cloves, minced
    • ½ cup low sodium chicken stock
    • ½ cup low sodium beef stock
    • ½ cup dry red wine (or additional beef/chicken stock if wine isn’t your thing)
    • 1 teaspoon dried thyme
    • 1 28-ounce can diced tomatoes
    • 1 ¾ cups water or additional chicken stock
    • 1 sprig fresh rosemary
    • 1 pounds small red potatoes, scrubbed and chopped into ¾” dice

• • • Adjust oven rack to middle position and heat oven to 300 degrees. Thoroughly pat roast dry with paper towels; sprinkle generously with salt and pepper.
    • Heat oil in large heavy-bottomed Dutch oven over medium-high heat until shimmering but not smoking. Brown roast thoroughly on all sides, reducing heat if fat begins to smoke, 8 to 10 minutes. Transfer roast to large plate; set aside. Reduce heat to medium; add onion, carrot, celery, and mushrooms to pot and cook, stirring occasionally, until beginning to brown, 6 to 8 minutes. Add garlic and cook until fragrant, about 30 seconds. Add chicken and beef broths, dry red wine, dried thyme, and diced tomatoes, with juice, scraping bottom of pan with wooden spoon to loosen browned bits. Return roast and any accumulated juices to pot; add enough water or chicken stock to come halfway up sides of roast. Bring liquid to simmer over medium heat, then place large piece of foil over pot and cover tightly with lid; transfer pot to oven. Cook, turning roast every 30 minutes, until fully tender and meat fork or sharp knife easily slips in and out of meat, 3 1/2 to 4 hours.  (Alternately, place in the slow cooker on low heat for 4-6 hours.)  About 1 hour before roast is finished, add diced red potatoes to the cooking liquid.  
    • Transfer roast to carving board; tent with foil to keep warm. Allow liquid in pot to settle about 5 minutes, then use wide spoon to skim fat off surface. Add sprig of fresh rosemary and boil liquid over high heat until reduced to 1 1/2 cups; discard rosemary and thyme sprigs. Season to taste with salt and pepper.
    • Using chef’s or carving knife, cut meat into 1/2-inch-thick slices, or pull apart into large pieces; transfer meat to warmed serving platter or bowl, pour sauce and vegetables over meat, and serve.