After allowing the Biscoff Blondies to cool completely at room temperature, you can store them for later enjoyment. Cut the blondies into squares or desired shapes, and place them in an airtight container or wrap them tightly in plastic wrap. For short-term storage, you can keep the blondies at room temperature for 3-4 days, ensuring they are well-sealed to maintain freshness. If you'd like to store the blondies for an extended period, freezing is a great option. Individually wrap each blondie in plastic wrap or place parchment paper between the layers to prevent sticking. Then, place the wrapped blondies in a freezer-safe container or freezer bag. You can store them in the freezer for 2-3 months. When you're ready to enjoy the frozen blondies, remove them from the freezer and let them thaw in the refrigerator or at room temperature. If desired, you can also reheat them in the oven at a low temperature for a few minutes until warmed through.