Zucchini gratin casserole

1. 1. Preheat the oven for 400 degrees F.
2. Heat a large, deep pot to medium heat and add the butter. Once melted, sauté the shallots and garlic in the butter until the shallots are translucent – about a minute or two.
3. Add the zucchini, heavy cream, salt, pepper, oregano, and Parmesan cheese. Let the mixture cook on the stove top for about 8 to 10 minutes, until the mixture is bubbly. Make sure to keep mixing everything with a spoon while it is cooking.
4. Then, transfer this mixture to a greased casserole dish (9x13 or a similar size should be plenty big) and mix in most of the cheddar cheese – once everything is blended thoroughly, sprinkle the rest of the cheddar cheese on top. I layered zucchini slices and sprinkled some cheddar on each layer like lasagna.
5. Bake the gratin for 10 to 14 minutes, or until the cheese is bubbly and golden-brown. Top with sliced green onions for garnish, if desired.
Enjoy!