Preheat oven to 425
Rinse and scrub sweet potatoes and poke holes with a fork
Place sweet potatoes on a baking sheet and roast for 45-60 minutes, or until fork tender
Cut sweet potatoes in half long ways
Gently scoop out filling and place in a bowl - making sure to leave a little around the edges to keep the skins from falling apart (I used about 2 cups worth)
Add beans, cilantro, lime, cayenne, onion powder, garlic powder, salt, cumin, and chili powder
Stir until combined
Scoop filling back into the 4 halves of the sweet potatoes
Top each half with 1/4 cup shredded mexican cheese
Bake at 425 for 5-10 minutes, or until cheese starts to brown
Serve topped with sour cream
Enjoy!