Preheat oven to 350°F. Spray a 9×13" pan with cooking spray.
Brown hamburger in a frying pan over medium-high heat. Add in onions and peppers and cook for about 3 minutes. Remove any extra grease.
Next season with taco seasoning. Then add in Rotel, black beans, corn and salsa. Add in the cream cheese and allow to melt. Stir until combined then remove from heat.
In your 9×13 pan, layer 5 tortillas (they may overlap). Then sprinkle about 1/2 cup of cheese on the tortillas. Next layer half of the hamburger mixture. Add another 5 tortillas on top and repeat with the hamburger, beans and corn.
Top with remaining cheese and then bake for 25-30 minutes, or until bubbly hot.
Top with desired toppings.
Freezing: Assemble lasagna in pan and then cover with plastic wrap or aluminum foil (do not bake). Store in freezer for up to 2 months. When ready to enjoy, let thaw in the fridge overnight. Then bake according to directions the next day.