01 -
Preheat oven to 175°C. Lightly grease a 23x33 cm baking dish and set aside.
02 -
In a large skillet over medium heat, brown ground beef and diced onion until the beef is no longer pink and onions are softened.
03 -
Stir in minced garlic and cook for 1 minute until aromatic. Mix in taco seasoning and water until well combined.
04 -
Add fire roasted diced tomatoes with their juices, green chiles, and drained black beans. Stir to combine and heat through.
05 -
Arrange 6 corn tortillas in the base of the prepared dish, overlapping to cover completely.
06 -
Spread one-third of the meat mixture evenly over the tortillas, then sprinkle 215 g cheese on top.
07 -
Repeat tortilla, meat mixture, and cheese layers twice more, creating three full layers in total.
08 -
Cover with aluminum foil and bake for 30–40 minutes or until the casserole is bubbling and cheese is thoroughly melted.
09 -
Remove from oven and allow to rest for 10 minutes before slicing to help maintain structure.
10 -
Top with diced tomato and sliced green onions. Serve with sour cream on the side.