Spice-Walnut Cookies

Ingredients

• 1⁄2 cup finely ground walnuts
• 1 1⁄4 cups unbleached, all-purpose flour
• 1 1⁄2 tsp. baking powder
• 1⁄8 tsp. salt
• 1⁄2 tsp. ground nutmeg
• 1⁄2 tsp. ground cinnamon
• 1⁄2 tsp. ground cloves
• 8 tbsp. unsalted butter, softened
• 1⁄2 cup granulated sugar
• 1⁄2 cup light brown sugar
• 1 large egg