First, preheat the oven to 375 degrees F. Then spray the baking dish with cooking spray and set it aside.
Next, cook the filling. Simmer the mixture for 10-15 minutes.
Assemble the lasagna by repeating layers of tortillas, beans, cheese, and meat mixture. End with a layer of tortillas and cheese.
Finally, bake for 15-20 minutes or until the cheese is melted and bubbly. Serve with the toppings of your choice.