Place diced sweet potatoes on a microwave-safe plate, cover with a damp paper towel, and microwave on high for about 5 minutes until partially tender

While sweet potatoes cook, mix sour cream and salsa in a small bowl for the optional sauce and set aside

Heat a large skillet over medium-high heat and add ground turkey, breaking it up with a spatula as it cooks

Continue cooking until turkey is mostly browned with a little pink remaining

Add the cooked sweet potatoes, black beans, salt, chili powder, cumin, and paprika to the skillet and stir to combine

Continue cooking for several minutes until sweet potatoes are soft and turkey is fully cooked through

Remove the skillet from heat and sprinkle shredded cheddar cheese over top if using

Let cheese melt slightly and garnish with sliced green onions and diced tomato

Serve hot with the optional sour cream and salsa sauce on the side