Red Velvet Whoopie Pies

Bahan-bahan (12 porsi)

• 2 cups (250g) all-purpose flour (spooned & leveled)
• 3 Tablespoons (15g) unsweetened natural cocoa powder
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup (8 Tbsp; 113g) unsalted butter, softened to room temperature
• 1 cup (200g) packed light brown sugar
• 1 large egg, room temperature
• 2/3 cup (160ml) buttermilk, room temperature
• 2 teaspoons pure vanilla extract
• gel red food coloring
• 6 ounces (170g) full-fat brick cream cheese, softened to room temperature
• 1/4 cup (4 Tbsp; 56g) unsalted butter, softened to room temperature
• 1 and 1/2 cups (180g) confectioners’ sugar, sifted (plus more for topping)
• 1/2 teaspoon pure vanilla extract