This is a great piece of slang because it certainly transcends and transpires its wending way over a variety of decades. Cookin in this context is probably a short form of a longer phrase, cookin with gas. That phrase shows up earlier than the 50s and is still spoken--at least by people I know--today. What it means in all its forms is kind of what it sounds like: things are going along super well, hot hot hot, getting to the boiling point. Everything is coming your way.
a funn game that is very addicting :)
The duration of What's Cookin'? is 1.15 hours.
Cookin' Cheap was created in 1981.
Christmas Cookin' was created in 1964.
Country Cookin was created in 1981.
French Cookin' was created in 1990.
Texas Cookin' was created in 1976.
cookin is what ya smell
Cookin' Cheap ended in 2002-10.
Cookin' with The Miracles was created in 1961-11.
Pressure Cookin' was created in 1973-08.
Cookin' on all Burners was created in 1983.