Prepare the dough using the Best Pizza Dough Recipe (follow this video instruction for more). Follow the preparation instructions in the dough recipe if prepared in advance.
Place a pizza stone in the oven and preheat to 500°F. OR preheat your pizza oven.
In a medium bowl, mix the refried black beans with a bit of water to thin the consistency so that it is easily spreadable. Mix with ½ teaspoon cumin, ¼ teaspoon paprika, and ¼ teaspoon cayenne.
Seed and dice the tomato. Thinly slice the green onion. Seed and dice the jalapeño (keep your hands away from your eyes!); or if you prefer, thinly slice it. Chop the cilantro.
When the oven is ready, dust a pizza peel with cornmeal or semolina flour. Stretch the dough into a circle; then gently place the dough onto the pizza peel.
Quickly assemble the pizza. Spread the bean mixture in a thin layer over the dough, sprinkle on as much cheese as you like, and add the red onion, tomato, jalapeño, corn, and cilantro. Sprinkle with kosher salt.
Transfer the pizza to the pizza stone using the pizza peel, and bake until the cheese and crust are nicely browned, about 5 to 7 minutes. Repeat Steps 4 through 6 for the second pizza. Chop the cilantro and add it as a garnish. Add sour cream and pickled onions, if desired.
