My secret is Edwards' Key Lime Pie. Seriously, fab.
You must try. It is available in the frozen pie section and if they are out another brand will not, I repeat, will not substitute. So, just move on (or buy the singles) and try again next time. This is my first time since the beginning of summer to find it in the store. A little hint, take it out of the freezer about an hour before serving and put it into the fridge the consistencywill be like cheesecake.
(Aunt Angie, this post is for you! I couldn't leave you hanging another night! : )