I make a pumped up chocolate milk:
I premix and just use the pre-made powder.
Ovomaltine (2 table spoons)
Cacao powder (1 Ts)
hemp protein (15g)
whey protein (20g)
And i mix this with date syrup (1ts) and oat milk (1/2l - i used to make mine but now just use shop bought… 
)
520 kcal, 76g carbs, 12.5g fat, 24g of protein
This is usually followed 30 to 60 mins later by my triple B:
thick slice of brown Bread, 50ish g of Biltong and a Banana