Place a pizza stone or large baking dish on the center rack of the oven and preheat to 450 degrees F.

Brush the pizza crust and edges with olive oil, set aside.

In a large bowl, combine black beans, corn, tomatoes, scallions, avocado, chile powder, and cumin. Place the pizza crust on the preheated pizza stone or baking sheet and top with black bean and vegetable mixture. Sprinkle with cheese.

Bake pizza until cheese is melted and pizza crust is golden brown and crisp around the edges. Let cool about 5 minutes before adding sour cream.

For the sour cream, I put mine in a Ziploc bag and cut a hole in the corner to drizzle the pizza slices. You could also dip your pizza into the sour cream or spread it on like you would a quesadilla. Up to you!