Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add onion to pan; sauté 2 minutes. Add garlic; sauté 30 seconds. Remove rice from bags; add to pan. Sauté 30 seconds. Stir in wine; cook 30 seconds or until liquid almost evaporates. Spoon rice mixture in an even layer into a 13 x 9–inch baking dish coated with cooking spray.
Arrange chicken thighs in a single layer over rice mixture; sprinkle evenly with thyme and salt. Combine broth and cream, stirring well; pour over chicken and rice mixture.
Bake at 450° for 15 minutes. Sprinkle with cheese. Bake an additional 5 minutes or until chicken and rice done.