I can see this becomming one of those ever lasting threads.
Here in Gods country, OOrrstraylearemate, we call them oven bags, not roasting bags.
Funny though, we here in Australia also call some female humans 'bags'...In a friendly way of course!! And some we don't want to be friendly with should be roasted
How about chicken (whole) from frozen to served in 35 minutes?...I kid you not!
One oven bag is needed. Do NOT use the wire thingy OK? Put chicken in bag and seal with a knot...NOT the wire thingy! Assuming the chicken is a standard commercial sized bird, it will be size 12, 1.2kg (about 3lb). Put bagged bird in microwave oven and turn the thing on. For a 700 watt oven you need about 1 minute per 100grams. So a frozen size 12 needs 12 minutes on high (minimum). 15 minutes would be better.
Whilst frozen, bagged bird is being zapped...turn on normal oven at 180c. Then put pot on stove and make a roux. After 15 minutes bird is cooked (sort of). Take care to open bag and pour liquid into pot with roux to make sauce. Put bird in roasting tray and put in normal oven for 20 minutes. After 20 minutes bird is golden crispy and yummy on the outside and tender juicy moist on the inside...
Serve with the pan gravy you made. Along with what ever vege you want...like chips...Mmm, chicken n chips...I will be back in 35 minutes!