Preheat a non-stick skillet over medium-high heat. Cook one disc of dough at a time for 1 minute. As soon as bubbles start to form, turn the tortilla over using a spatula. Cook for another 1 to 2 minutes or until the tortilla is nicely puffed up. Set aside on a plate. Cover with a clean, dry dishcloth to keep warm and to prevent from drying out until ready to serve.