Soft Cakey Sugar Cookies - cooking recipe

Ingredients

1 cup powdered sugar
1 cup white sugar
1 cup butter
3 eggs
1 1/2 cups sour cream
1 teaspoon vanilla
6 cups flour, divided
1/2 cup cornstarch
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon mace
2 cups buttercream frosting
rainbow candy sprinkles (optional)

Preparation

Cream butter and sugars. Add eggs one at a time, sour cream, and vanilla. Mix until fluffy.
In a separate bowl, sift or whisk 5 cups flour, cornstarch, baking powder, baking soda and mace.
Mix dry ingredients into creamed ingredients 1/3 at a time. Divide into 2 or 3 discs or rolls. Cover each in plastic wrap. Chill for at least one hour.
Roll out to 1/4 inch thickness. Cut into 2-3 inch circles or desired shapes.
Bake at 300 degrees F for 8-12 minutes, until just beginning to brown on the bottom. Cool on pan for 5 minutes, transfer to cooling rack for 10-15 more minutes, until completely cooled.
Frost with buttercream frosting, and decorate with sprinkles. Allow frosting to set before storing in an air-tight container.