01 -
Heat a large skillet over medium-high heat. Add ground beef and cook until no longer pink, breaking it into small crumbles. Drain excess fat and reduce heat to medium.
02 -
Add drained black beans and corn to the skillet with ground beef. Stir thoroughly to incorporate.
03 -
Add garlic powder, onion powder, taco seasoning, and water. Stir and simmer gently until the mixture thickens slightly.
04 -
Stir in diced green chiles and sliced black olives if using. Mix well.
05 -
Fold frozen diced hashbrowns into the mixture evenly. Remove from heat.
06 -
Spread half of the beef mixture in the bottom of a 5-6 quart slow cooker. Sprinkle one-third of the shredded cheese evenly over the top, then add half the tortilla pieces. Pour half of the enchilada sauce over the tortillas.
07 -
Add the remaining beef mixture, another third of the shredded cheese, the remaining tortilla pieces, and the rest of the enchilada sauce. Top with the final third of shredded cheese.
08 -
Cover and cook on high for 1 to 1.5 hours or on low for 2 hours. Avoid overcooking to prevent tortillas from disintegrating.