Preheat oven to 350 F. In a large pan, brown ground beef over medium heat. Drain and add packet of taco seasoning. Set aside.
In a sheet pan arrange a layer of chips. Top with cheese, black beans and beef. Cook in the oven for about 10-15 minutes, until cheese is nice and melted.
While nachos are baking, dice tomatoes, chop cilantro and slice avocados. When nachos are done baking, top with tomatos, cilantro avocado, sour cream and salsa. Serve and enjoy!