This is as close to English toffee as I have ever tasted. I have a great sister-in-law that shared this one with me several years ago and it has been one of my Christmas favorites ever since! It is quick and easy and makes a very nice gift when wrapped in a cute holiday dish!
Place butter, sugar, water and corn syrup in a heavy pan. Use a candy thermometer and cook over medium high heat to the hard crack stage stirring constantly to prevent burning and sticking. (295 degrees F.)
Remove from heat and add vanilla.
Spread on a cookie sheet or jelly roll pan that has been greased with butter.
Break Hershey's candy bars over the toffee base and let melt. Spread the chocolate over the toffee base.
Sprinkle the nuts over the chocolate and place pan in the freezer to cool.
Once candy has cooled (about 15 minutes) break candy into bite sized pieces.