how long to cook a semi frozen whole chicken?
Essentially, simmering and roasting (or baking). The general guideline you need to know is that it will take around 50 percent longer than if you're starting with a chicken that is fully thawed. Thus, if a 5-pound chicken would normally take 1 1/2 hours to roast, a frozen one would take at least 2 hours and 15 minutes.