Wash and pierce the sweet potatoes all over with a fork (about 9 times). Microwave for 5 minutes, flip, and microwave for another 3-5 minutes until tender (a knife should slide through easily). Let cool slightly, peel, and dice into ½-inch pieces.
Measure out seasonings.
Heat olive oil in a large skillet over medium-high heat. Season the meat with ¾ teaspoon salt and ¼ teaspoon pepper. Add meat to the skillet and brown one side, then flip to brown the other (1 minute per side). Break the meat into small crumbles using a wooden spoon. Add the seasoning mix and stir until fully incorporated. Continue cooking until the meat is browned and any fat has cooked off. Taste and adjust seasonings if needed.
Add diced sweet potatoes and black beans to the skillet. Stir to combine. Sprinkle cheese over the top, cover, and let it melt for 3-4 minutes. If needed, broil for 1-2 minutes to melt the cheese.
Top with cilantro, lime, avocado, or sour cream as desired. Serve alone or over cooked rice.
