A hearty casserole combining tender chicken, wild rice, and mushrooms in rich cheese sauce topped with crispy panko. Perfect for make-ahead meals.
Cook wild rice blend according to package directions, checking doneness at 25 minutes.
Season chopped chicken with salt, pepper, and paprika after patting dry.
Sear chicken in oil until just opaque, remove to bowl using slotted spoon.
Sauté onions, carrots, celery in same pot until tender, add garlic briefly.
Caramelize mushrooms in butter until deeply golden on each side.
Make sauce by whisking flour with butter and oil, then adding liquids and seasonings.
Simmer sauce until thickened, then stir in cheeses until melted.
Combine sauce with chicken, vegetables, and cooked rice in casserole dish.
Top with remaining cheese and buttered panko crumbs.
Bake covered at 350°F for 30-35 minutes until bubbly.