To assemble this Cheesy Angel Chicken Rice Casserole gluten-free. Simply switch out the cream of chicken soup with a gluten-free version. Which you can effortlessly find at most grocery stores. Further, make sure your Italian dressing mixture is approved gluten-free, as some labels may hold concealed gluten. Utilize gluten-free chicken stock as well, and you're good to go! This way, you can relish all the creamy, cheesy excellence of this casserole, without fearing gluten sensitivities.