need to warm a very large casserole ..how long will it take to heat a 12 x 16 x 3" aluminum pan of chicken and wild rice?
Has it already been baked? Has it been refrigerated? Regardless, I'd suggest covering it and heating at 325 degrees until it reaches an internal temperature of 165 degrees. To facilitate heating, think about adding 4 to 6 ounces of some sort of liquid. White wine would do nicely, as would either chicken or vegetable stock.