Step 1

Line a large cookie sheet with parchment paper, wax paper, or a silicone mat. In a deep microwave-safe bowl, combine sugar and corn syrup. Mix thoroughly and microwave on HIGH for 4 minutes.

Step 2

Stir in peanuts and microwave on HIGH until the mixture is light brown, about 3 to 5 minutes longer.

Step 3

Stir in butter and vanilla until combined. Microwave on HIGH until peanuts are lightly browned, about 1 to 2 minutes longer.

Step 4

Stir in baking soda until mixture is light and foamy. Pour onto prepared pan and cool 30 minutes. Break into pieces to serve and store in an airtight container.