Chai Spiced Monkey Bread

Name: Chai Spiced Monkey Bread
Ingredients: 4 tablespoons softened unsalted butter, divided; 1 cup milk, warmed to 110º F; 1/3 cup water, warmed to 110º F; 1/4 cup sugar; 2 1/4 teaspoons active dry yeast (one envelope); 1 large egg; 2 cups all-purpose flour; 1 1/4 cup whole wheat or spelt flour; 2 teaspoons salt; 1 cup light brown sugar; 8 tablespoons unsalted butter, cool but pliable; 1 teaspoon ground cinnamon; 1 teaspoon ground ginger; 1/4 teaspoon ground cardamom; 1/4 teaspoon ground allspice; 1 vanilla bean, seeds scraped