01 - Preheat the oven to 400°F.
02 - Heat 1 tablespoon olive oil in a large skillet over medium heat. Add diced onion and minced garlic; sauté for 2-3 minutes until fragrant.
03 - Add ground turkey to skillet. Cook, breaking up with a spoon, until browned and cooked through, about 5-7 minutes. Season with smoked paprika, dried thyme, ground cumin, chili powder, salt, and pepper.
04 - Stir in diced bell pepper and cook for 2 minutes. Add chopped spinach and cook until wilted, about 1 minute. Remove from heat.
05 - In a large mixing bowl, toss diced sweet potatoes with remaining 1 tablespoon olive oil and a pinch of salt and pepper.
06 - Lightly grease a 9x13-inch baking dish. Spread sweet potatoes in an even layer on the bottom. Spoon turkey and vegetable mixture evenly over the sweet potatoes. Pour chicken broth evenly over the top.
07 - Cover tightly with aluminum foil and bake for 25 minutes.
08 - Remove foil, sprinkle with cheddar cheese if using, and bake uncovered for an additional 15 minutes until sweet potatoes are tender and cheese is melted and bubbly.
09 - Let rest for 5 minutes before garnishing with chopped fresh parsley and serving.