Into large microwaveable bowl, measure cereal; set aside. Line cookie sheet with waxed paper. In 2-cup microwaveable measuring cup, microwave brown sugar, butter and corn syrup uncovered on high 1-2 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 microwaveable 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.