Peanut Butter & Jam Sandwich is not a healthy meal. Primarily because most people make the sandwich with white bread, which has no nutritional value ... really. Besides jams have tons of sugar. So instead of bread use APPLE slices and add just a little bit of jam mostly for the cuteness and color as apples are very sweet naturally.
Apples are healthier than ANY type of bread ... really. A medium apple has 4.0 grams of fiber. One slice of white bread has less than 1 gram of fiber, plus sugar, oh my!
And there you have it!