Classic NYC-Style Black and White Cookies

Ingredients

• All-purpose flour (2 cups)
• Baking powder (1/4 teaspoon)
• Salt (1/4 teaspoon)
• Unsalted butter, softened (1/2 cup)
• Granulated sugar (1 cup)
• Eggs (2)
• Vanilla extract (1 teaspoon)
• Milk (1/2 cup)
• Confectioners' sugar (4 cups)
• Boiling water (1/4 cup)
• Semi-sweet chocolate, melted (1/2 cup)

Instructions

1. Preheat your oven to 375°F (190°C) and line two baking sheets with parchment paper.
2. In a medium bowl, whisk together the flour, baking powder, and salt.
3. In a separate large bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Beat in the eggs one at a time into the butter mixture, then stir in the vanilla extract.
5. Gradually add the flour mixture to the butter mixture, alternating with the milk. Begin and end with the flour mixture.
6. Drop the dough by 1/4 cupfuls onto the prepared baking sheets.
7. Bake until the edges are golden, about 15 minutes. Allow the cookies to cool on the pans for 5 minutes, then transfer them to wire racks to cool completely.
8. For the icing, whisk together the confectioners' sugar, boiling water, and 1 teaspoon of vanilla until smooth in a large bowl.
9. Spread the vanilla icing onto one half of each cookie.
10. Stir the melted chocolate into the remaining icing until smooth, then spread this chocolate icing onto the other half of each cookie.
11. Let the cookies stand until the icing is set.