Hello DutchOvenDad, it's a common frustration, so don't worry. You're on the right track with chuck roast and a Dutch oven. The issue isn't usually the cut or the equipment, but the specifics of the cooking process.
Your goal is to break down collagen, the tough connective tissue in the chuck roast, into rich, unctuous gelatin. This happens most efficiently in a moist environment between 160°F and 205°F (about 70°C to 95°C). If your pot gets too hot and boils, the muscle fibers will seize up and squeeze out their moisture, resulting in tough, dry meat. If it's too low, the collagen won't break down properly.
Here is a reliable method:
- Searing is not optional. Pat your roast completely dry and season it aggressively with salt and pepper. Sear it in hot oil on all sides until a deep brown crust forms. This creates immense flavor (the Maillard reaction). Remove the meat from the pot.
- Build a flavor base. Sauté your vegetables (onion, carrots, celery) in the rendered fat until softened. Deglaze the pot with something acidic like red wine or even just beef broth, scraping up all the browned bits from the bottom.
- The Braise. Return the roast to the pot. Add enough liquid (broth, a bit of wine, maybe some crushed tomatoes for more acid) to come about halfway up the side of the meat. You do not want to submerge it; it should braise, not boil.
- Patience in the oven. Put the lid on and place it in an oven preheated to 300°F / 150°C. Now, ignore the clock. Start checking after 3 hours. It's done when a fork can be inserted and twisted with absolutely no resistance. This could be 3 hours or it could be 5. The size and shape of the roast matters more than a set time.
- Rest the meat. This is critical. Let the roast rest in its juices for at least 15-20 minutes before shredding or slicing. This allows the muscle fibers to relax and reabsorb some of the liquid.
Following these steps, especially controlling the temperature to a gentle simmer and cooking until it's fork-tender (not just for a set number of hours), will give you that fall-apart result you're looking for. Good luck!