In a large skillet, spray a light layer of oil and heat over high temperature. Add the ground turkey, season it with 1 teaspoon of salt and 1 teaspoon of cumin, and cook while breaking up the meat until fully browned and cooked through, approximately 5 minutes.
Shift the browned turkey to one side of the skillet. Spray the other side with a little more oil, add the chopped onion and tomato paste, and sauté for about 1 minute, stirring occasionally.
Stir in the sweet potatoes, black beans, corn, diced tomato, jalapeño, minced garlic, and chopped cilantro. Pour in the chicken broth and add the remaining ¼ teaspoon salt and ½ teaspoon cumin, adjusting to taste if desired.
Mix all ingredients thoroughly, cover the skillet, reduce the heat to low, and cook for 12 to 14 minutes or until the sweet potatoes become tender.
Serve the skillet mixture with sliced avocado, lime wedges, and additional cilantro for garnish if desired.