Easy Microwave Caramels

1/2 c. butter, melted
1/2 c. sugar
1/2 c. brown sugar
1/2 c. Karo syrup
1/2 c. condensed milk
Nuts, optional

Cook 6 to 10 minutes on high in microwave. About 4 minutes into cooking, stop and stir then cook for anther 4 to 5 minutes. Pour into pan. Let cool then cut and wrap.