1Heat oven to 350°F. Place mini paper baking cup in each of 48 mini muffin cups. Make brownies as directed on box for fudge-like brownies, using water, oil and eggs. Divide batter evenly among muffin cups. Bake 14 to 16 minutes or until toothpick inserted in center comes out clean. Cool in pans on cooling racks 45 minutes.
2In medium bowl, beat cream cheese and butter with electric mixer on medium speed until smooth. Beat in melted white chocolate until smooth. Gradually beat in powdered sugar and vanilla until smooth. Frost brownies. Sprinkle with chocolate shavings. Store covered in refrigerator.