01 - Preheat the oven to 400°F. Lightly grease a 9x13-inch baking dish with nonstick spray or oil.
02 - In a large skillet over medium heat, cook the ground turkey until browned throughout, breaking it apart with a wooden spoon, about 5 to 6 minutes. Add the diced onion, red bell pepper, and minced garlic. Sauté for 3 to 4 minutes until the vegetables have softened.
03 - Stir in the ground cumin, smoked paprika, chili powder, dried oregano, salt, and black pepper. Cook for 1 minute, stirring constantly, until the spices are fragrant and well distributed.
04 - Add the diced sweet potatoes, rinsed black beans, diced tomatoes with their juices, and chicken broth to the skillet. Bring the mixture to a simmer and cook for 8 to 10 minutes, stirring occasionally, until the sweet potatoes begin to soften.
05 - Transfer the entire mixture from the skillet into the prepared baking dish, spreading it into an even layer. Cover tightly with aluminum foil and bake for 20 minutes.
06 - Remove the foil and sprinkle the shredded cheese evenly across the top. Return the dish to the oven uncovered and bake for an additional 10 minutes, or until the sweet potatoes are fork-tender and the cheese is fully melted and bubbly.
07 - Allow the bake to rest for 5 minutes before serving. Garnish individual portions with chopped fresh cilantro and sliced avocado if desired.