Place the vegetables in a steamer basket; place in a small saucepan over 1 in. of water. Bring to a boil; cover and steam for 2-3 minutes. In another small saucepan, combine the turkey, soup, broth and vegetables; cook until bubbly. Transfer to a 1-qt. baking dish coated with cooking spray.
In a small bowl, combine biscuit mix and milk just until blended. Spread over turkey mixture; drizzle with butter. Bake, uncovered, at 350° for 30-40 minutes or until filling is bubbly and crust is golden brown.