Ingredients
Method
Preheat and Season
- Preheat oven to 325°F (163°C). Generously season the chuck roast on all sides with salt, pepper, and taco seasoning.
Prepare for Roasting
- Place the seasoned roast in a Dutch oven. Add quartered onions, orange juice, and beef stock around the roast. Cover with the lid and transfer to the oven.
Slow Roast
- Roast for 3.5 to 4 hours until beef is tender enough to shred. If it’s not tender, return to oven for 30 minutes more, keeping the lid on.
Crisp the Meat
- Increase oven temperature to 425°F (218°C). Shred the beef with two forks and mix with the cooked onions. Spread onto a baking sheet, sprinkle with a bit more taco seasoning, and roast uncovered for 15–25 minutes until caramelized in spots.
Prepare Toppings & Assemble
- While the meat crisps, prepare guacamole. Char tortillas over an open flame for extra flavor. Spread guacamole on tortillas, add shredded beef, and top with salsa and other desired toppings.