How to Cook a Frozen Chicken in a Crock Pot. Put 1 cup hot water in crock pot , then place frozen chicken, rub 1/2 stick of margarine on top with salt and pepper. cover, Cook on low heat 6 hrs. turn chicken over, turn to high for 3 more hours. Add: some corn starch mixed with hot water to the juice for gravy , it will thicken up in about 5 or 10 minutes. Perfect !!