Orange Cream Cheese Frosting (for Pumpkin Bars)

Pumpkin bars are moist, delicious and super easy to make (try this one), but most recipes I found recommend regular cream cheese frosting.  Adding a dash of orange really compliments the pumpkin and greatly increases their deliciousness!
3 ounces cream cheese
2 Tablespoons butter, softened
Beat until fluffy. Then add the following and beat those in as well.
1 1/2 tsp milk
1/2 tsp vanilla
3/4 tsp grated orange peel
Sift 2 cups (start with 1.5 and see if you need the rest) powdered sugar and add to mixture above to make spreadable icing.    Spread on cooled bars and enjoy!