Raspberry-Cream Sandwich Cookies

INGREDIENTS

• 1 3/4 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 1/4 sticks (10 tablespoons) unsalted butter, softened
• 1 1/2 cups plus 2 teaspoons sugar
• 1 large egg
• 2 teaspoons pure vanilla extract
• 1 vanilla bean, halved lengthwise, seeds scraped and reserved
• 6 ounces (1 cup) fresh raspberries
• 7 1/2 ounces best-quality white chocolate, coarsely chopped
• 1/3 cup heavy cream