COOK chicken in hot oil in large nonstick skillet on medium-high heat 5 to 7 minutes or until chicken is no longer pink, stirring frequently.
ADD Macaroni, water, salsa and cumin; stir until well blended. Bring to boil. Reduce heat to medium-low; cover. Simmer 10 minutes.
STIR beans and Cheese Sauce into macaroni mixture; cook until heated through, stirring occasionally. Sprinkle with onions. Serve topped with sour cream.