Peanut butter and chocolate chip bars

Lately I have been using peanut butter as a way of increasing my protein intake: I buy the natural type made with roasted peanuts only and add a spoonful to smoothies and such.

That reminded me of these bars I made ages ago, when I bought natural peanut butter for the first time. The jar seemed to last too long and I wanted to make something delicious with it. These bars are easy to put