Old Fashioned Butter Cookies with Butter Frosting

Step 1
Prepare cookies: Beat butter and white sugar in a large bowl until creamy. Beat in egg, milk, and vanilla until smooth.

Step 2
Whisk flour, baking powder, and salt in a separate bowl. Gradually stir dry ingredients into wet ingredients to make a smooth dough. Chill dough in refrigerator for 2 to 3 hours.

Step 3
Preheat the oven to 400 degrees F (200 degrees C). Dust a pastry cloth or kitchen towel generously with flour.

Step 4
Divide dough into thirds and roll each third out 1/8-inch-thick on the prepared pastry cloth. Cut shapes out of the rolled dough with cookie cutters. Place cookies onto ungreased baking sheets.

Step 5
Bake in the preheated oven until cookies are barely browned, 5 to 8 minutes. Let cookies cool on baking sheets for 5 minutes before removing to finish cooling on a wire rack.

Step 6
While cookies are cooling, prepare frosting: Beat 3 cups powdered sugar, butter, 9 teaspoons evaporated milk, and vanilla in a bowl until smooth. Gradually stir in remaining 6 cups powdered sugar into mixture until combined. Continue to beat on high speed until frosting is fluffy; stir in additional evaporated milk or confectioners' sugar if needed to reach desired consistency.

Step 7
Frost cooled cookies.