Caramel Frosting - cooking recipe

Ingredients

1 1/2 c. brown sugar
1 1/2 c. white sugar
1 1/2 c. milk
2 Tbsp. butter

Preparation

Combine sugar and milk and bring to a boil, stirring constantly, then cook without stirring to soft ball stage, about 232\u00b0 on candy thermometer.
Remove from heat.
Add butter and cool to lukewarm.
Beat until thick and creamy.