Weirfan PBJ are already very unhealthy, cant imagine adding butter ....but I suppose thats why people are so obese in NA
When prepared on whole wheat bread, a PB&J sandwich made with two Tbsps. of peanut butter and two Tbsps. of jelly adds up to a whopping 530 calories, 460 mg of sodium, 74 grams of carbs, 35 grams sugar and 20 grams of fat.
There are others that would say PB is an excellent source (in moderation) of protein, vitamins/minerals, and monounsaturated fats.