1. Spray large nonstick saucepan or Dutch oven with cooking spray, heat over medium heat until hot. Add turkey, onion and garlic; cook and stir 5 minutes or until turkey is no longer pink.
2. Stir beans, tomatoes with juice, corn and Mexican seasoning into saucepan; bring to a boil over high heat. Cover; reduce heat to low. Simmer 15 minutes, stirring occasionally.
3. Meanwhile, cook pasta according to package directions, omitting salt. Rinse and drain pasta, stir into saucepan. Simmer, uncovered, 2 to 3 minutes or until heated through.
4. Top each serving with dollop of sour cream. Garnish as desired