This is simple – you don’t! I get very heated on this subject because I believe French macarons are something that should be baked and enjoyed right away. The longer the meringue sites out, the staler the cookies become. I believe that French macarons are good for 6 to 8 hours at the most. Beyond that, they either start to do one of two things – they will either get crispy or soggy. And neither of those textures are good in this cookie! So, I like to bake French macarons and eat what I want, and then give them to friends or neighbors. They are great to bake for a party as you know they’ll all be gobbled up by your guests. So, plan to make these Chocolate French Macarons on a day when you have friends or family around.