Cover cookie sheet with waxed paper. In large microwavable bowl, 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. Stir in cereals.

Microwave on High 3 minutes, stirring each minute. Spread on cookie sheet to cool, about 10 minutes. Break into bite-size pieces.

In microwavable bowl, microwave chocolate chips uncovered on High about 1 minute 30 seconds or until chocolate can be stirred smooth (bowl will be hot). Drizzle chocolate over snack. Refrigerate about 30 minutes or until chocolate is set. Store in airtight container.

Cover cookie sheet with waxed paper. In Dutch oven, cook brown sugar, butter and corn syrup over low heat, stirring frequently, until melted. Stir in baking soda until dissolved. Stir in cereals. Cook over medium-high heat 3 to 5 minutes, stirring frequently, until cereal is evenly coated. Spread on cookie sheet to cool, about 10 minutes. Break into bite-size pieces. In 1-quart saucepan, melt chocolate chips over low heat, stirring frequently. Drizzle chocolate over snack. Refrigerate about 30 minutes or until chocolate is set. Store in airtight container.

High Altitude (3500-6500 ft): Microwave Directions: No change. Stove-Top Directions: After stirring in cereals, cook over medium heat.