Recipe #2-Best Sugar Cookies EVER

I didn't post yesterday, which is a huge disappointment to me. However, today is another day, and I am still trucking, so I shall proceed.
Today's post is my absolute favorite Sugar Cookie recipe. I also included two types of frosting; both of them are equally as good as the other. The cool thing about this recipe is that you can roll it out and cut shapes like a normal recipe, or shape little one inch balls and while they are baking, they will flatten into circles. No extra effort in that method, if you choose to do so.
SUGAR COOKIE RECIPE
2/3 cup butter, softened
3/4 cup sugar
1 Tbsp. milk
1 tsp. baking powder
dash salt
1 egg
2 cups flour
1 tsp. vanilla
Blend together in order of ingredients. Form into ball, wrap in plastic wrap and refrigerate for at least an hour. Roll and cut into shapes, or roll into one inch balls and place two inches apart on cookie sheet. Bake at 350 degrees for about 10 minutes. Let sit on cookie sheet for a few minutes to cool before removing to wire racks. Cool completely before icing.
CREAM CHEESE FROSTING (see below for other type of icing)
6 oz. cream cheese, softened
1/2 cup butter, softened
2 tsp. vanilla
4-1/2 to 4-3/4 cups powdered sugar
food coloring, if desired
With hand mixer, blend first two ingredients, then add vanilla and slowly add powdered sugar until good consistency.
SUGAR COOKIE ICING
4 cups powdered sugar
1/2 cup butter, softened
5 Tbsp. milk
1 tsp. vanilla
food coloring, if desired
Cream together sugar and butter until mixed. Add milk and vanilla until you've reached the desired consistency.