Cream Cheese Icing

From Anna Olsen of Sugar

• 1 lb cream cheese, room temperature
• 6 tbsp unsalted butter, room temperature
• 1 cup icing sugar, sifted
• 4 tbsp sour cream

1. Beat cream cheese until smooth. Beat in butter
2. Reduce speed and add icing sugar, and beat until smooth
3. Stir in sour cream