Season the beef: Generously season 2 pounds of cubed beef chuck roast with salt and black pepper to enhance its flavor.
Heat the oil: In a large Dutch oven, heat 3 tablespoons of vegetable oil over medium-high heat.
Sear the beef: In batches, sear the beef cubes until browned on all sides. Once browned, transfer them to a plate to rest.
Deglaze the pot: Pour in ½ cup of red wine and use a wooden spoon to scrape up the browned bits from the bottom of the pot; these add rich flavor.
Add broth and seasonings: Stir in 4 cups of low-sodium beef broth and 1-2 teaspoons of Worcestershire sauce. Return the beef to the pot, along with 1 teaspoon of dried rosemary, 1 teaspoon of dried parsley, and ½ teaspoon of ground black pepper.
Bring to a boil: Increase the heat to bring the mixture to a boil.
Simmer: Reduce the heat to low, cover, and let it simmer for 1 hour, allowing the flavors to meld.
Prepare vegetables: While simmering, peel and cube 3 large potatoes, cut 4 carrots into 1-inch pieces, and chop 4 stalks of celery and 1 large onion.
Mix cornstarch: In a small bowl, combine 2 teaspoons of cornstarch with 2 teaspoons of cold water until smooth, creating a slurry.
Add veggies and thickener: After the hour is up, stir the prepared vegetables and the cornstarch slurry into the pot. Stir well and continue to simmer for another hour or until everything is fork-tender.
Season to taste: Taste the stew and adjust the seasonings as needed based on your preference.
Serve: Transfer to serving bowls and enjoy your warming dish!