Root Beer Float Gobs — печенья с рутбиром и сливочно-сырной начинкой

Ингредиенты

• 4 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1 1/2 teaspoons baking soda
• 1 teaspoon salt
• 2 cups sugar, sifted
• 8 tablespoons unsalted butter, softened, cut in 1/2-inch cubes
• 2 eggs, separated, at room temperature
• 1 teaspoon vanilla extract
• 1 cup buttermilk, at room temperature
• 2 tablespoons sour cream
• 3 tablespoons root beer extract
• 8 tablespoons unsalted butter, softened, cut in 1/2-inch cubes
• 12 tablespoons cream cheese, cut in 1/2-inch cubes
• 2 tablespoons vanilla extract
• 1 large vanilla bean, seeds scraped and reserved
• 2 tablespoons sour cream
• 1 to 2 tablespoons fresh lemon juice
• 2 cups confectioners' sugar, sifted