Preheat your oven to 425 degrees. Line a baking pan with foil, and spray with cooking spray. Place pitas (or whatever you are using for the crust) on the baking pan.
In a medium bowl, warm the refried beans in the microwave for 30 seconds, which will help them to spread easier. Add salsa to beans and stir to combine. Spread bean mixture evenly on each pita crust.
Sprinkle 1/4 cup cheese over the top of each pizza. Bake for 10 minutes, then turn on your oven's broiler for the last 1-2 minutes to brown the cheese slightly, watching carefully to make sure the pizzas don't burn. Top each pizza with 2 tbs of the beans, corn, and diced tomatoes. Enjoy with taco sauce drizzled on top, and additional toppings if desired!