How to Make Pinwheel Cookies

Bahan-bahan (28 porsi)

• 2 and 2/3 cups (333g) all-purpose flour (spooned & leveled)
• 3/4 teaspoon baking powder
• 1/2 teaspoon salt
• 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
• 1 cup (200g) granulated sugar
• 1 large egg + 1 egg yolk, at room temperature
• 1 and 1/2 teaspoons pure vanilla extract
• 2 Tablespoons (10g) unsweetened natural or dutch-process cocoa powder
• 1 Tablespoon (15ml) milk
• optional: 1/2 teaspoon espresso powder
• 6 ounces (170g) white, semi-sweet, or dark chocolate, finely chopped (see Note)
• optional: sprinkles