Add butter, brown sugar, and corn syrup to a large microwavable bowl. Microwave one minute. Stir. Continue to microwave in 30 second intervals until the mixture is smooth and creamy. Add baking soda and stir until combined.
Add Bugles to butter mixture. Microwave in one minute increments, stirring after each minute. Microwave for a total of three minutes.
Pour Bugle mixture onto wax paper.
Put semisweet chocolate chips in a snack size seal-able bag. Leave the bag unsealed and microwave for two minutes, at half power. Seal bag and kneed until chocolate chips are completely melted. Snip a small triangle off the corner or the bag and drizzle over Caramel Bugles.
Repeat with white chocolate chips.
Microwaves cook so differently. Watch the mixture carefully making sure it doesn't burn. You may need to reduce cooking time.