1 cup sweetened condensed milk
1 cup brown sugar
5 tablespoons corn syrup
1/2 pound butter or margarine
Mix all ingredients together in a large bowl. Put in microwave on HIGH until it bubbles - about 5 minutes.
Stir, then boil for 12 minutes, stirring three times, every three minutes.
Grease a cookie sheet and pour in center. Cool and cut into pieces.