Prep your green beans by cleaning them up and snipping any ends necessary. Keep them whole or cut them into bit sized pieces.
Heat oil in a non-stick skillet or frying pan. Add in your green beans and saute for 1 minute.
Add in Cajun seasoning, salt and pepper.
Cook for a few minutes more until either crisp-tender or cooked to your liking.
Depending on the Cajun seasoning you have...it may or may not be salty. If it is not salty, add in some salt. If you prefer your green beans cooked through, add a TBS or two of water to the pan to allow them to cook through.