You can! To freeze your eggplant lasagna but only unbaked. Do not freeze this recipe once cooked. Prepare all of the ingredients and layer the lasagna as directed, but don't bake. Instead, wrap the casserole dish tightly in plastic wrap and foil and freeze for 2-3 months. When you're ready to serve, thaw the lasagna overnight in the fridge and bake as directed. You may need to add a little bit of extra time since the layers will be cold.