1/2 cup brown sugar
1 cup sugar
1/2 cup corn syrup
1/2 cup butter
1 12 oz can evaporated milk
1 tsp vanilla
dash salt
Combine brown sugar, sugar, corn syrup, butter, and evaporated milk in a heavy saucepan. Bring to a boil over medium heat.
Boil, stirring constantly, for 15-20 minutes or till mixture thickens. I like mine pretty thick (almost to a soft ball stage if you want to use a thermometer). Remove from heat and stir in vanilla and salt.
Sauce will thicken as it cools. Serve warm over ice cream.