Step 1: Prepare the Taco Meat

1. Preheat oven to 375°F (190°C).
2. In a large skillet over medium heat, cook the ground beef until browned. Add diced onion and cook for another 2 minutes until softened.
3. Drain any excess grease, then stir in taco seasoning and ¼ cup water. Simmer for 2 minutes.
4. Add black beans, corn, Rotel, and salsa, stirring to combine. Let simmer for 5 minutes.

Step 2: Assemble the Casserole

1. In a greased 9×13-inch baking dish, spread half of the crushed tortilla chips at the bottom.
2. Spoon half of the taco meat mixture over the chips.
3. Sprinkle half of the shredded cheese over the meat.
4. Repeat the layers: another layer of crushed chips, then the rest of the taco meat, followed by the remaining cheese.

Step 3: Bake to Perfection

1. Cover the dish with foil and bake for 20 minutes.
2. Remove the foil and bake for another 10 minutes, or until the cheese is melted and bubbly.
3. Let cool for 5 minutes before serving.

Step 4: Add the Toppings & Serve

• Sprinkle with diced tomatoes, chopped cilantro, jalapeños, and green onions.
• Serve with a dollop of sour cream or guacamole on top.
• Enjoy warm with extra tortilla chips on the side!