1 cup butter
1/3 cup whipping cream
2 cups flour
Sugar (superfine preferred or use granulated)

Filling:
1/2 cup butter or vegetable shortening
2-1/2 to 3 cups confectioners' sugar
3 tablespoons whipping cream
1 teaspoon vanilla extract
Blue food coloring

Make Cookies:
Blend butter, cream and flour well and chill 1 hour.

Roll dough 1/8" thick on floured board. Cut dough with small Chanukah star cookie cutter. Dip each cookie lightly into sugar on one side and place on cookie sheet.

Prick each cookie with a fork 4 times (16 holes) and bake at 350°F 7 to 9 minutes until light brown on bottom but still white on top. Cool on rack.

Make Filling:
Combine ingredients (start with 2-1/2 cups confectioners' sugar) and beat until smooth and spreadable (somewhere between the consistency of mayonnaise and peanut butter). If icing is too thin, beat in extra confectioners' sugar. If too thick, add a little cream. Add blue food coloring carefully until desired color. Spread filling lightly between 2 cookies, sugared side out, for sandwich.