I'm so sorry to hear you did not enjoy your cups. We grind and make our peanut butter filling fresh in house and do not add any oil. However, as all orders are filled with freshly made cups, the filling, upon arrival, is definitely on the gooey side (we do not do anything to dehydrate the filling). If you prefer your cups with a firmer PB center, I would recommend keeping them in the fridge and enjoying them chilled or simply letting them age a bit to allow the centers to naturally firm up a bit.