Chocolate Orange Sandwich Cookies

Bahan-bahan (32 porsi)

• 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
• 1 cup (120g) confectioners’ sugar
• 1 and 1/2 Tablespoons fresh orange zest (about 1 large orange)
• 1 large egg, at room temperature
• 1 large egg yolk, at room temperature
• 1 and 1/2 teaspoons pure vanilla extract
• 1/4 teaspoon salt
• 2 cups (250g) all-purpose flour (spooned & leveled), plus more as needed for rolling
• optional: coarse sparkling sugar for topping
• 2/3 cup (160g/ml) heavy cream
• 6 ounces (170g) semi-sweet chocolate, finely chopped