Turkey& Bean Tacos

Warm taco shells according to package directions. In a skillet, heat oil over medium heat. Add turkey, onions, and bell peppers. Cook until turkey is no longer pink and vegetables are tender. Stir in refried beans, sour cream, chili powder, and garlic powder. Cook over low heat, stirring constantly until heated through. Spoon mixture into warm shells. Sprinkle with cheese.