This is one of my favorite cookies – they are SO good! COOKIES: ¾ cup firmly packed brown sugar 1 cup butter, softened 1 egg yolk 2 cups flour FROSTING:* 2 tablespoons butter 1-1/4 cups powdered sugar ½ teaspoon vanilla 4 to 5 teaspoons milk DIRECTIONS: In a large bowl, beat brown sugar and 1 cup butter until light and fluffy.  Add egg yolk; blend well.  … [Read more...]