A comforting casserole combining caramelized onions, tender chicken, creamy sauce, and melty cheese, perfect for chilly evenings or meal prep.
For extra texture, sprinkle panko crumbs on top before baking. Cool leftovers to room temperature before refrigerating, keeping quality for 3-4 days.
Keyword casserole, Chicken, Comfort Food, French Onion, Rice Bake