- 1/2 cup butter
- 1 cup packed brown sugar
- 1/4 cup milk
- 2 cups powdered sugar
- In a 2-quart saucepan, melt butter over medium heat. Stir in brown sugar. Heat to boiling, stirring constantly; reduce heat to low. Boil and stir 2 minutes. Stir in milk. Heat to boiling; remove from heat. Cool to lukewarm, about 30 minutes.
- Gradually stir powdered sugar into brown sugar mixture. Place saucepan of frosting in bowl of cold water. Beat with spoon until smooth and spreadable. If frosting becomes too stiff, stir in additional milk, 1 tbsp at a time.