1 c. sugar
3/4 c. light corn syrup
2/3 c. water
1 tbsp. cornstarch
2 tbsp. butter
1 tsp. salt
2 tsp. vanilla

Butter square pan, 8 x 8 x 2 inches. In 2 quart saucepan, combine sugar, corn syrup, water, cornstarch, butter and salt. Cook over medium heat, stirring constantly, to 256 degrees on candy thermometer. Remove from heat; stir in vanilla. Pour into pan.