"This is a quick and easy Mexican dinner in about 45 minutes. Try it with a little salsa, sour cream, and shredded lettuce and dinner is served! Make sure the ingredients you choose are gluten-free. You can also make your own chili and use it."
Preheat oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking dish.
Mix chili, black beans, and onion together in a bowl.
Layer 4 tortillas in the bottom of the prepared baking dish; cover with 1 cup Cheddar cheese. Spoon half the chili mixture over cheese layer. Repeat 2 more layers with the remaining ingredients, ending with Cheddar cheese on top. Cover dish with aluminum foil.
Bake in the preheated oven until lasagna is bubbling, 20 to 30 minutes.