Please choose the correct solution to the question: To allow the cookie to firm up after cooking

Solution1: 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.

Solution2: 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.

Answer format: solution1/solution2
Answer: solution1