Well they are loaded with calories but too much is from sugar and starch, so no they are not a good part of a clean diet, but yes they will put on weight.

even the natural peanut butter???

white bread--not too good
skippy--- too sugary

natural peanut butter --better but I like to eat it by itself with a glass of milk--or try it on chicken breasts --sort of like thai chicken

Nat. PB on wheat is great for bulking.

yeah it's good. Just don't over do it and make yourself a fatass. lol