Created by Fizzybrat on September 2, 2017
Step 1: Melt butter in saucepan
Step 2: Stir in brown sugar and heat to boiling, stirring constantly
Step 3: Boil and stir over low, 2 minutes
Step 4: Stir in milk, heat to boiling
Step 5: Cool to lukewarm and stir in icing sugar
Step 6: Place saucepan over bowl of ice water and beat until spreading consistency