Into large microwavable bowl, measure cereal; set aside. Line cookie sheet with waxed paper.
In 2-cup microwavable measuring cup, microwave brown sugar, butter and corn syrup uncovered on High 1 to 2 minutes, stirring after 1 minute, until melted and smooth. Stir in baking soda until dissolved. Pour over cereal, stirring until evenly coated. Microwave on High 3 minutes, stirring every minute. Spread on cookie sheet. Cool 10 minutes. Break into bite-size pieces.
In small microwavable bowl, microwave vanilla baking chips uncovered on High about 1 minute 30 seconds or until chips can be stirred smooth (bowl will be hot). Drizzle over snack. Refrigerate until set. Store in tightly covered container.
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