Preheat the oven to 400°F.
Add the ground beef to a large skillet over medium heat. Cook, breaking the meat apart as it browns, until no pink remains. Drain any excess grease if needed.
Add the taco seasoning and the amount of water directed by your taco-seasoning recipe. Cook until the meat is well seasoned and most of the liquid has been absorbed.
Arrange the hard taco shells upright on a sheet pan. Place them close together so they can help support one another.
Divide the taco meat evenly among the hard shells. Sprinkle the shredded cheese over the meat.
Bake the filled taco shells for approximately 15 minutes, or until the cheese has melted and the shells are hot and crisp.
While the tacos bake, warm the queso according to the package directions.
Spread approximately 1 tablespoon of warm queso in a thin layer over one side of each flour tortilla. If the tortillas are stiff, warm them briefly so they can fold without tearing.
Remove the baked tacos from the oven. Place each crunchy taco in the center of a queso-covered flour tortilla.
Fold the soft tortilla around the hard taco shell and gently press it against the sides.
Serve immediately with shredded lettuce, diced tomatoes, sour cream, hot sauce or your family’s favorite taco toppings.