Vanilla Rooibos Tea Cookies

INGREDIENTS

• 1/4 cup powdered sugar
• 1/2 cup unsalted butter
• 1/4 teaspoon salt
• 2 tablespoons rooibos tea leaves (about 5 tea bags)
• 1 teaspoon vanilla
• 2 teaspoons milk
• 1/4 cup plus 1 tablespoon sugar
• 1 1/2 tablespoon turbinado sugar
• 1 vanilla bean, whole, ends trimmed, cut into segments
• 1 1/4 cup flour