1. Begin by heating the olive oil in a large skillet over medium-high heat. Add the ground turkey and break it up as it cooks, stirring occasionally, for about 5 minutes. Then, add the diced onion and bell pepper, and continue cooking until the onion is softened.

2. Next, add the diced sweet potatoes, red chili flakes (if using), salt, and pepper to the skillet. Cover the pan and let the sweet potatoes cook, stirring occasionally, until they’re tender. If needed, add a splash of water or a drizzle of oil to help the sweet potatoes cook through.

3. Once the sweet potatoes are fork-tender, sprinkle the shredded mozzarella cheese over the top (if using). Cover the skillet and let the cheese melt for a few minutes. Finally, remove the skillet from the heat and garnish the dish with freshly chopped parsley.