Buy tubs of unsweetened, natural greek yogurt, add honey and cinnamon, enjoy a 20g protein serving food with almost no filler. It's going to be considerably cheaper than commercial protein bars, and probably even more so than you can make yourself.
Quest bars are great and have almost no filler, but they are $$$. MikeCF has recommended them before. They ship on amazon and taste awesome, but run around $3/bar (when you factor in taxes and shipping).
Quest bars are great and have almost no filler, but they are $$$. MikeCF has recommended them before. They ship on amazon and taste awesome, but run around $3/bar (when you factor in taxes and shipping).