Prepare the tortillas:
Heat a skillet over medium heat and lightly fry the flour tortillas until they are golden brown and crispy. Set aside.
Make the Taco Bell sauce:
In a medium saucepan, combine the tomato sauce, cumin, garlic powder, chili powder, sugar, and salt.
Simmer on medium heat for about 10 minutes, stirring occasionally to blend the flavors.
Cook the ground beef:
Brown the ground beef in a skillet over medium heat. Season with taco seasoning (store-bought or homemade). Drain excess fat if necessary and set aside.
Assemble the pizza:
Preheat your oven to 375°F (190°C).
Place one crispy tortilla on a baking sheet and spread a layer of refried beans on top. Add a layer of seasoned ground beef over the beans.
Top with another crispy tortilla to create the double-layered base.
Top with sauce and cheese:
Spread a generous amount of the Taco Bell sauce over the top tortilla.
Sprinkle shredded cheese on top.
Bake:
Bake in the preheated oven for about 10 minutes, or until the cheese is melted and bubbly.
Add final toppings:
Once the pizza is baked, remove it from the oven and top with diced tomatoes, black olives, and chopped green onions. Optionally, add sour cream and jalapeños for extra flavor.
Serve:
Slice the pizza into quarters and serve with your favorite sides like nachos or a side of guacamole.