Combine sugar,corn syrup, and salt into a large (4-6 cup capacity) glass bowl.
Microwave on HIGH for 5 minutes; add peanuts and microwave 2 more minutes (using a 1,000-watt microwave. If your microwave is less than 1,000-watt, microwave an additional 4 minutes) CAUTION! The sugar mixture will be VERY hot (beyond the boiling point), so use care when removing it from the microwave
Carefully stir in the remaining ingredients. The mixture will bubble and may splatter when you stir in the ingredients, so please be careful!
Pour into a buttered jelly roll pan or quarter sheet cake pan ; shake pan or use a heat resistant silicone spatula to spread the mixture thinly and evenly in the pan.
Cool until firm, then break into pieces. Store in an airtight container.