01 -
Set the oven to 350°F and allow it to reach temperature.
02 -
In a skillet over medium heat, cook ground beef until fully browned. Drain excess fat.
03 -
Mix in taco seasoning with the beef and add water as directed on seasoning packet; simmer for 5 minutes to blend flavors.
04 -
In a baking dish, spread half of the crushed tortilla chips. Layer half the beef mixture, followed by black beans, bell peppers, diced tomatoes, and shredded cheese. Repeat these layers once more.
05 -
Cover with the remaining tortilla chips and bake for 25 to 30 minutes until the casserole is bubbly and the topping is golden brown.
06 -
Allow to rest for 10 minutes before serving. Accompany with sour cream.