PBJFF stands for Peanut Butter, Jelly, Fruit & Flax. My son loves peanut butter and jelly sandwiches and this adds an easy nutrition boost. Just add ground flax to the peanut butter (you can mix it up if your child is super picky) and finely slice up the fruit of your choice ( I used fresh strawberries here). Lightly spread jelly on your bread (I use Whole Foods 360 brand fruit spread and Limpa brad from a local baker) and add sliced fruit. Add peanut butter/flax mixture to other slice of bread. Slap the two pieces together and eat it up.