In a large skillet over medium heat, add the pound of lean ground beef. Use a wooden spoon to break it apart as it cooks. Brown the beef until it is fully cooked, about 5-7 minutes. Drain any excess fat if necessary.
Once the meat is browned, sprinkle in the 3 tablespoons of taco seasoning. Add the 2 tablespoons of tomato paste and 1 cup of water. Stir everything together until the beef is evenly coated in the seasoning and tomato paste.
Reduce the heat to low and let the mixture simmer for about 5 minutes. This allows the flavors to meld and the liquid to reduce slightly, creating a flavorful filling.
While the beef is simmering, prepare your taco shells according to the package instructions. If you’re using hard shells, you may want to bake them for a few minutes to enhance their crunch. For soft tortillas, warm them in a skillet or microwave.
Take a taco shell and fill it with the seasoned ground beef mixture. Top with your choice of shredded cheese, chopped lettuce, diced tomatoes, sliced olives, and chopped avocado. Feel free to get creative with your toppings!
Arrange the assembled tacos on a serving platter and serve immediately. Enjoy the feast!