Australian Black And White Cookies - cooking recipe

Ingredients

1/2 cup all-purpose flour
1/3 cup butter, chopped
1 large egg yolk
2 tbsp lemon juice
None None Filling
1/2 cup butter, chopped
1/3 cup powdered sugar, sifted
1 tbsp milk
1 tsp vanilla extract
None None Icing
3 tbsp milk
1/2 tsp vanilla extract
1/2 tbsp cocoa, sifted

Preparation

Preheat oven to 350\u00b0F. Lightly grease 2 x 12-hole whoopie pie pans.
Sift flour into bowl; rub in butter. Stir in yolk and enough juice to form a dough. Knead gently on lightly floured surface until smooth. Wrap in plastic wrap; chill 30 minutes.
Roll dough between 2 sheets of parchment paper to 1/8 inch thick. Cut into rounds the size of the whoopie pie molds using a cookie cutter. Line whoopie pie molds with dough; prick all over with a fork.
Bake 10-12 minutes, until golden. Cool on rack.
To make the filling: In a bowl, cream butter and sugar; beat in milk, 1 tbsp boiling water and vanilla. Set aside.
To make icing: In a bowl, mix powdered sugar, 2 tbsp milk and vanilla. Spoon half into second bowl. Stir cocoa and remaining 1 tbsp milk into first bowl.
Fill tart bases with filling, leveling tops with spatula. Spread 1 teaspoon vanilla icing over half of each tart; allow to set. Cover remaining half of each tart with chocolate icing; Allow to set.