HEAT oven to 350ºF.
COOK chicken and onions in Dutch oven or large deep skillet on medium heat 6 min. or until chicken is lightly browned, turning chicken after 3 min. and stirring onions occasionally. Remove from pan; cover to keep warm. Add rice to pan; cook and stir 30 sec. Add broth and half of Our Favorite Chimichurri; bring to boil. Add chicken and onions. (Do not stir.) Cover tightly.
BAKE 30 min. Top with remaining Our Favorite Chimichurri. Bake, covered, 5 min. Top with cheese.