Used peanut butter with stabilizers. Made these cookies by hand rather than using a mixer. Only mixed for a few minutes – maybe three to five – and when the “dough” started getting sticky/greasy, I stopped mixing, threw in the freezer for a few minutes, then rolled them into balls and stuck in the fridge for about 24 hours. Otherwise, pretty much followed directions. Baked on parchment paper for eight minutes. Excellent!