I had all the ingredients on hand so I thought I'd try them. Excuse me the presentation, I didn't really think it would be too good and I didn't cut it any more accurately.
* Ingredients & Methods :
°2 cups sugar
°1/2 cup milk
°1 cup peanut butter (used very crisp)
°1 teaspoon vanilla extract
Boil sugar and milk together for 3 minutes (sugar should be completely dissolved so the texture is not brave). Add the peanut butter and vanilla extract and stir until smooth. Pour in 8x8 and let cool.
Enjoy !