Preheat oven to 375°F. Brown the ground beef over medium-high heat and drain the excess grease.
Add the water and taco seasoning. Simmer and stir for two minutes.
Remove from the heat. Add diced tomatoes with chilies, black beans, and one cup of shredded Mexican blend cheese. Stir until combined.
Spread the mixture in a greased 2-quart casserole dish. Bake at 375˚F for 15-20 minutes, until bubbly.
Remove from oven and top with crushed tortilla chips and the remaining ½ cup shredded cheese. Bake for 3-5 minutes or until cheese is melted.
Top with your favorite taco toppings.
Video
Notes
If you know you are going to have leftovers, don't add the toppings to the entire dish since they won't hold up well in storage. Instead, only add toppings to each serving. Store leftovers in an airtight container in the refrigerator for 3-4 days or in the freezer for up to 2 months.