PB2 (peanut Butter)
I use PB2 in mine, have previously done a post on it, as it makes it more low fat. Which for me us a bonus. However you can also use ordinary peanut butter.
Get PB2 on Amazon
All I do is slice a banana down the middle, like a roll and then spread my peanut butter down the middle. You can then just add any sides, sauces or toppings you wish. I'm rather partial to the walden farms calorie free syrups on mine. Also I love a good little sprinkle of hundreds and thousands :-) To really get that banana split feel why not add a little light squirty cream. Hope you enjoy lovlies xoxo