Cook, stand, freeze by: Matt - Pasta Recipes Made Easy
Hi Barbara,
We always cook the lasagna and then let it cool for a good while before freezing it.
The reason is simple - lasagna tends to take on a more stable, secure form when cooked and cooled, whereas the layers and ingredients of an uncooked lasagna can slide around a lot in the freezer drawer.
You'll find more info, including a free downloadable Freezing Lasagna quick-guide, over on this page.
Hope that helps,
Matt.
PS: And since you're obviously a lasagna lover, you might also like my easy pasta cookbook: it has an entire section packed with easy-to-print lasagna recipes and comes supplied with a free and exclusive Lasagna 101 guide. Ciao!