In 10-inch skillet, melt butter over medium heat. Stir in flour with whisk until blended. Cook about 2 minutes, stirring frequently. Stir in broth; heat to simmering over high heat. Simmer 1 to 2 minutes or until thickened. Remove from heat. Beat in cream cheese with whisk until sauce is smooth and free of lumps. Spread 1/2 cup of the sauce evenly in bottom of baking dish.