Here is a goal: To allow the cookie to firm up after cooking

How would you accomplish this goal?

Available options:
A). Cover the layered cookie in plastic wrap and carefully place it in the refrigerator overnight (or for several hours if you are making this in the morning.;
B). Cover the layered cookie in plastic wrap and carefully place it in the oven overnight (or for several hours if you are making this in the morning.;
A).