01 -
Preheat your oven to 350°F. Coat a 9x13-inch pan with a bit of non-stick spray, then set it aside for later.
02 -
Cook the ground beef with the onions in a large cooking pan over medium heat. Stir and cook until the beef turns brown and the onions soften.
03 -
Add the minced garlic, give it about a minute to cook, then stir in the taco spice blend and water until the mixture combines.
04 -
Pour in the black beans (drained), tomatoes with their liquid, and green chiles. Mix everything well and let it warm up together.
05 -
Take 6 tortillas and create a base layer in the greased baking dish, overlapping them just slightly until the bottom is covered up.
06 -
Spoon a third of the meat filling over the tortillas, spreading evenly. Sprinkle 2 cups of the shredded cheese on top. Repeat this setup for two more layers.
07 -
Cover the dish tightly with foil and bake for 30-40 minutes until the cheese is bubbly and nicely melted.
08 -
After removing the lasagna from the oven, leave it to cool for about 10 minutes—it'll hold its shape better before cutting. Add your diced tomatoes, green onions, and a dollop of sour cream when serving.