Piped Chocolate Butter Cookies

Bahan-bahan (30 porsi)

• 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
• 3/4 cup (150g) granulated sugar
• 1 large egg, at room temperature
• 1 and 1/2 teaspoons pure vanilla extract
• 2 cups (250g) all-purpose flour (spooned & leveled)
• 1/3 cup (27g) natural or dutch-process unsweetened cocoa powder
• 1/4 teaspoon salt
• 2 Tablespoons (30ml) milk, warm
• 1 teaspoon espresso powder*
• 4 ounces (113g) semi-sweet chocolate, finely chopped*
• maraschino cherries
• sprinkles or coarse sugar