1/2 cup butter, softened
1/2 cup brown sugar
1 egg
1 teaspoon vanilla extract
1 cup all-purpose flour
1/2 cup packed brown sugar
1/2 cup milkshake water
1 1/2 teaspoons lemon juice
In a medium bowl, cream together the butter, brown sugar, egg and vanilla. Beat in the flour, stirring just until incorporated. Mix the brown sugar mixture with the milk, and mix into the creamed mixture all at once.
When the dough has pulled together, roll the dough into an inch thick. Cut into desired shapes. Place onto ungreased cookie sheets.
Bake in preheated oven for 10 to 15 minutes, until golden. Cool completely before cutting into squares.