Line a 15x10x1-in. pan with parchment or waxed paper. In a microwave-safe bowl, microwave chocolate chips and coffee granules on high for 45 seconds; stir. Continue microwaving in 15-second intervals until smooth, stirring after each interval. Stir in 1/3 cup coffee beans., Spread into prepared pan. Refrigerate until set, but not hard, about 15 minutes., In a microwave, melt white baking chips according to package directions. Stir in remaining coffee beans; spread over chocolate layer. Refrigerate until firm. Break into pieces.