Meanwhile, in 12-inch skillet, melt butter over medium-high heat. Cook garlic and mushrooms in butter 5 to 6 minutes, stirring occasionally, until mushrooms are tender. Sprinkle with flour, salt and pepper; cook and stir 1 minute. Gradually add broth, stirring constantly until sauce thickens slightly. Add cream cheese; cook and stir until melted. Stir in tomatoes, bell pepper and basil.