01 -
Switch on your oven to 175°C. Rub some butter or spray oil on a 23x33 cm pan so nothing sticks.
02 -
Toss the beef and onions into a large skillet set to medium heat. Cook until the meat turns brown and the onions soften.
03 -
Put the garlic in and stir for a minute, just until you can smell it. Add the taco seasoning and water, then mix it all together.
04 -
Mix the tomatoes (with their juice), green chiles, and black beans into the skillet. Let it all warm through for a couple minutes.
05 -
Grease your pan and cover the bottom with 6 tortillas, overlapping where needed to fill gaps.
06 -
Spread one-third of the meat mix over the tortillas. Scatter about 215 g of cheese on top.
07 -
Build two more layers in the same way—tortillas first, then the meat mixture, followed by cheese.
08 -
Cover the pan with foil and bake for 30–40 minutes. The cheese should melt and look bubbly.
09 -
Set the dish aside for about 10 minutes after it comes out of the oven. It makes slicing easier and keeps it from falling apart.
10 -
Top each slice with diced tomatoes and green onions. Add a dollop of sour cream for extra flavor.