Oatmeal, milk, protien powder, peanut butter, brown sugar if that is your thing. I haven't done the accurate math, but estimating using 8 0z milk, 2 tblspoons of peanut butter, one scoop of whey (20grams of protien) and 1 cup of oatmeal, this packs over 400 cals and 40 grams of protien. Definetely not a snack for cutting, but one of the best things I use for bulking. mmm mmm good.
Usually, casien powder is recommended at night because it digests slower than whey. I feel in this mix whey is alright because the oatmeal and fats from the milk and peanut butter will slow the digestion of whey.