Working with 6 tortillas at a time, wrap in a barely damp cloth or paper towel and microwave on High until steamed, about 30 seconds. Lay the tortillas on a clean work surface and coat both sides with cooking spray. Then carefully drape each tortilla over two bars of the oven rack. Bake at 375°F until crispy, 7 to 10 minutes.
Working with 6 tortillas at a time, wrap in a barely damp cloth or paper towel and microwave on High until steamed, about 30 seconds. Lay the tortillas on a clean work surface and coat both sides with cooking spray. Then carefully drape each tortilla over two bars of the oven rack. Bake at 375°F until crispy, 7 to 10 minutes.
Links:
[1] http://www.eatingwell.com/sites/default/files/taco_shell_baking_mj07_310.jpg
[2] http://www.eatingwell.com/recipes/eatingwell_taco.html
[3] http://www.eatingwell.com/recipes/eatingwell_crispy_taco_shells.html