Place sweet potatoes in a microwave safe bowl with a tablespoon of water and cook for 3 minutes, or until tender. Set aside.
Heat oil over medium heat. Add onion, garlic, and peppers and cook until onions are translucent, about 3 minutes. Add beans and sweet potato and cook until heated through, about 3 minutes.
Add creme cheese and stir until combined. Add salt and stir. Scoop onto whole wheat tortillas and top with cilantro and tomatoes.