- Stir syrup, water and sugar together in large, heavy pan to hard ball stage (250*F- 265*F-- A little of this syrup dropped into cold water will form a hard ball).
- Stir in butter and peanuts until golden brown.
- Stir in vanilla and soda.
- Pour into 2 buttered pizza pans, just shaking pan to even out mixture.
- Cool and break into pieces.