If using dried chickpeas, make sure to measure after cooking. To prepare the chickpeas soak them for at least 8 hours. Place them in a saucepan with water and bring boil. Cook until tender. Instead of PB2 powder try using regular flour or even peanut butter flavored protein powder, but I cannot vouch for the results. If you substituent only flour the bars will not taste like peanut butter. You may ay also just want to try straight up peanut or other nut butter, if using this option try using 2-3 Tbs. nut butter and 1/4 c. flour (any). Keep in mind I have not tried these suggestions, but am going off of my own knowledge of trial and error. For a more intense peanut butter flavor add in more PB2 powder, probably about another 1/8-1/4 c. The bars may turn out more dense. Instead of sprinkling the chocolate and caramel on top,mix it into the batter.