Preheat oven to 400° F.

In a small bowl mix together chili powder, paprika, cumin, salt, oregano, garlic powder, onion powder, and cayenne pepper (if using).

Toss sweet potato pieces with vegetable oil and half the seasoning mixture from the small bowl, about 2 tablespoons. Bake for 15-20 minutes until tender and cooked through.

Meanwhile, cook beef over medium-high heat for about 5-7 minutes until cooked through. If necessary, drain any large quantities of fat from skillet, leaving about 1 tablespoon. Add beans, fresh corn (if using kernels from a cob) and remaining seasoning mixture from the small bowl. Toss to fully coat beans and beef with seasoning. Continue to cook until beans and corn are heated through.

To serve, either place all ingredients in separate dishes for family style serving, or make individual bowls before serving at the table.

Serve with any desired optional garnishes (sour cream, jalapeños, sliced green onion, chopped cilantro leaves, lime slices, crumbled feta, etc.).