Gym twice a week?

I want to start going to the gym again to add mass.
 
Work is very busy at the moment, which means I can only make it to the gym on weekends.
 
Can someone recommend a routine that is good for twice a week? 
 
Thanks

A good heavy basic compound routine BTH you say week end which only gives you sat and sun with no rest so its a bit of a no no start. Maybe try an all over body work out programme already tried and tested on here. How much you wanna gain. what your stats?

A lot of gyms are open until quite late and open early. Is there no way you can go at all in the week?
 
Like Welshbloke says, having Saturday and Sunday as your only days isn't ideal, especially taking into consideration the fact that you might be out drinking the night before some weekends.
 
If Saturday and Sunday is your only option, perhaps just do squats and bench saturday (with some assistance exercises) and then deadlift and weighted chins on Sunday (with assistance exercises) or something like that. I think that's what I'd probably do if i had no choice but to go Saturday and Sunday.

I would do
Day 1: Squat, Bench, OHP
Day 2: Deadlift, Pull/chin ups, Rows

I approve.

Just do 2 full body sessions focusing on compound lifts.
 
Squats, front squats, leg press, lunges, bench press, OHP, dips, chins, rows, deadlifts. Take you pick. Do 3-4 lifts per session plus you could add in an isolation lift or 2. You could rotate these if you want. Different lift each sessione etc. Alot depends how much time you have for your sessions. Superseting stuff could be your friend here.

eg
 
Session1
Chins
Squat
OHP
Lunges
 
Session2
Deadlift
Front squats
Bench
Biceps
 
 

Thanks for all the above.