This family-friendly recipe for a beef taco casserole is packed full of your favorite tex-mex flavors and finished with toppings galore!
Preheat the oven to 400 degrees F and grease a 9x13 casserole pan (or similar size). Set aside.
Heat the oil in a large non-stick skillet set over med/high heat. Add the diced onion and saute until softened and golden, about 5 mins.
Add the ground beef to the skillet and cook until browned. Drain the fat and return the skillet to the stove.
Stir in the taco seasoning, chili powder, oregano, tomato paste, and water. Cook for 2 mins.
Stir in the tomato sauce, green chiles, and beans. Cook for 5 mins. Season with salt and pepper to taste.
Spread the tortilla chips in the bottom of the casserole dish. Add the ground meet mixture in an even layer. Sprinkle with cheese and bake until the cheese has melted the the casserole is bubbling, about 10-15 minutes.
Serve immediately, being sure to scoop from the bottom.