Mix 1/2 c light corn syrup and 1 c sugar in microwave safe bowl.
Microwave on high 4 minutes.
Add 1 c salted peanuts.
Microwave 3 minutes.
Add 1 tsp vanilla and 1 tsp baking soda.
(It's hot and will foam up!)
Pour onto buttered cookie sheet (or parchment paper).
Cool and break into pieces.