01 - Preheat the oven to 400°F. Grease a 9×13-inch baking dish and set aside.
02 - In a large skillet over medium heat, cook the ground turkey until browned, breaking it apart with a 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 are softened.
03 - Stir in the ground cumin, smoked paprika, chili powder, dried oregano, salt, and black pepper. Cook for 1 minute until fragrant, allowing the spices to bloom in the residual heat.
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 to 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 over the top. Bake uncovered for another 10 minutes, or until the sweet potatoes are fork-tender and the cheese is melted and bubbly.
07 - Let the bake rest for 5 minutes before serving. Garnish with chopped fresh cilantro and sliced avocado if desired.