Preheat the oven to 400 degrees.
Place a tortilla on a baking sheet lined with parchment paper.
Spread a thin layer of refried beans.
Add some of the ground beef on top of the beans.
Top with another tortilla.
Spoon some of the enchilada sauce over the top tortilla.
Sprinkle with cheese, tomatoes, and olives.
Bake in the preheated oven until the cheese is melted. This should be about 10 minutes.
Remove the Mexican pizzas from the oven, top with green onions, slice, and enjoy!