Combine: In a 1.5 qt casserole dish combine sugar and corn syrup. Stir well and microwave for 3.5 minutes. Add salted peanuts and stir well. Microwave for 5 to 5.5 minutes. Add butter and vanilla and stir well. Microwave for 1 minute. Add baking soda and stir until foamy.

Chill: Pour onto greased cookie sheet and spread. Once hardened, break into pieces.