TIP: The best way to get the lava effect is with a big dollop of peanut butter in the center and to be sure to smush the edges of the pie crust together really well.
TIP: You can also use the tips of a fork to crimp and seal each cookie.
TIP: The sugar on the inside and this double coating of sugar on the outside helps sweeten these cookies up. The pie crust doesn’t tend to be sweet enough for a good flavor.
TIP: No matter what kind of peanut butter you use or how much you put in there, the lava effect comes from being warm and melty, so once the cookies cool down, the peanut butter goes back to its room temperature state.