This is one of my favorite pizza hacks. Start with a cheese pizza and scrape off as much cheese and reserve for the top. I usually do half because my kids still prefer cheese only.
Once the cheese is off then add guacamole.
Next add black beans. I use canned beans that are rinsed.
After the beans are on sprinkle the cheese on top and bake to your liking. Usually just a little longer than the box suggests for me.