Making Shredded Beef Tacos is straightforward if you follow these steps:

1. Sear the Beef: Heat olive oil in a large skillet over medium-high heat. Sear the beef roast on all sides until browned. This step enhances the flavor.

2. Sauté the Aromatics: Remove the beef from the skillet. Add the chopped onion and minced garlic, sautéing until the onion is translucent.

3. Prepare the Slow Cooker: If using a slow cooker, place the seared beef in the slow cooker. Top with sautéed onions and garlic.

4. Add Broth and Spices: Pour in the beef broth and sprinkle the chili powder, cumin, smoked paprika, oregano, salt, black pepper, and red pepper flakes over the beef.

5. Cook the Beef:
– For Slow Cooker: Cover and cook on low for 4-6 hours or until the beef is fork-tender.
– For Oven: Preheat the oven to 300°F (150°C). Place the covered pot in the oven and cook for 2.5 to 3 hours.

6. Shred the Beef: Once cooked, remove the beef from the cooker. Use two forks to shred the meat into bite-sized pieces.

7. Simmer the Shredded Beef: Return the shredded beef to the cooking liquid in the slow cooker or pot. Mix well to combine, letting it simmer for about 10–15 minutes.

8. Warm the Tortillas: While the beef simmers, warm the tortillas in a dry skillet or a microwave until pliable.

9. Assemble the Tacos: Place a generous serving of shredded beef onto each tortilla.

10. Add Toppings: Top with chopped onions and fresh cilantro. Serve with lime wedges and your choice of salsa or hot sauce.

These steps will guide you in creating flavorful Shredded Beef Tacos effortlessly.