Heat oil in large skillet over medium heat until hot. Add onion and garlic; cook and stir 2 to 3 minutes or until tender.
Stir in peanut butter, sweet potatoes and beans; mash slightly. Add cumin, cinnamon and ground red pepper; mix well. Reduce heat to low; cover and simmer 2 to 3 minutes or until thoroughly heated, stirring occasionally.
Meanwhile, heat tortillas according to package directions. To serve, spoon and spread scant 1/2 cup sweet potato mixture across center third of each tortilla. Top each with 2 tablespoons salsa, 1 tablespoon sour cream, 2 teaspoons green onions and 1 teaspoon cilantro; spread to cover sweet potato mixture. Fold sides of each tortilla 1 inch over filling. Fold bottom 1/3 of tortilla over filling; roll again to enclose filling. Place seam side down on serving platter.