To prepare a veggie pizzadillas recipe, first you need to prepare your ingredients. First, you'll need your pizza dough. You can find it at your local grocery store, or you can make your own at home. Next, preheat your oven to 450 degrees. Take your dough, and roll it out until it's about 12 inch thick. Then, cut the dough in half lengthwise and place it on the baking sheet. Using your hands, press down on each half of the crust, making sure not to tear it. If you don't have any dough left, use your fingers to flatten out the bottom of your pan. Place the pan in the oven and bake it for 20 to 25 minutes, until the cheese is melted and the toppings are bubbling.