Prep your Cabbage: Thinly slice your cabbage. This step is crucial for the recipe to work; ensure all slices are very thin. Butter the pie dish and add the sliced cabbage to it. To soften the cabbage, sprinkle some salt and massage it in.
Create the batter: In a separate bowl, whisk eggs, whipping cream, and mayo until blended; then incorporate dry ingredients.
Assemble your casserole:Pour the batter on top of the cabbage and sprinkle with shredded mozzarella.
Bake: Bake until golden brown perfection in about 35 minutes.