Striped Fudge Cookie Sandwiches

Bahan-bahan (32 porsi)

• 2 and 1/4 cups (281g) all-purpose flour (spooned & leveled), plus more as needed for rolling and work surface
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature
• 3/4 cup (150g) granulated sugar
• 1 large egg, at room temperature
• 2 teaspoons pure vanilla extract
• 6 ounces semi-sweet chocolate, coarsely chopped and divided
• 3 Tablespoons (45 ml) heavy cream
• optional if needed to thin out topping: splash vegetable oil or melted coconut oil