Be careful of wanting "High calorie" anything, you want to fuel your body to grow not overwelm its ability to use what you drink and stoe as fat.
There are tons of guidlines posted on the sight.....and with out knowing your body comp I won't give specifics but.....
There are tons of great quaility protein powders on the market, that you can mix with oats, water, skimmilk, nuts or flaxoil, to come up with a combination that will work for you.
Determine how much carb/protein/fat to be eatting a day, split it into 6 meals and go alittle heavier on the carbs on your next 2 post work out meals (I like a 2 carb to 1 protein ratio, post work out.)
Just downing a 1500 calorie super shake will probably make you fat, may as well enjoy it and gett a BQ blizzard