This can be put together ahead of time, unbaked and refrigerated. Remove from refrigerator about 1 hour before putting into oven, then proceed with baking directions.
This is a simple summertime side dish. A great recipe when zucchini is in abundance. You really taste the spinach. Combined with the Parmesan cheese, oh my this is a good recipe. It does make a small batch - perfect for a small family. If you've got a big crew, then double the recipe.