Meanwhile, melt butter in large saucepan on low heat. Add garlic; cook and stir 1 min. Stir in flour; cook and stir 2 min. Gradually stir in broth; cook on medium heat until mixture boils and thickens, stirring constantly. Add cream cheese, mozza cheese and 1/4 cup Parmesan; cook and stir 2 min. or until cheeses are melted and sauce is well blended.