I highly recommend this recipe for chocolate peanut butter cookies with peanut butter filling. The dough is moist and highly pliable, making it a treat to work with. The filling, however, needs some adjustment (perhaps the proportions work with Skippy or Jif, but not with MaraNatha). The flavor it fine, but even after adding another 50% peanut butter, the filling never gets smooth. I think that one should use less sugar all together, and regular sugar, not powdered sugar. I would also add a pinch of vanilla to the filling.
But, in any case, make these cookies.