Place cereal in a large microwave-safe bowl; set aside. Line a cookie sheet with waxed paper.

In a 2-cup microwave-safe 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 baking soda into sugar mixture, stirring until dissolved. Pour over cereal, stirring until evenly coated. Microwave coated cereal on High 3 minutes, stirring every minute.

Spread cereal mixture over the prepared cookie sheet. Cool 10 minutes. Break into bite-sized pieces.

In a small microwave-safe 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 melted baking chips over snack. Refrigerate until set, 10 minutes or longer. Store in a tightly covered container.