Ina Garten's Baked Spinach and Zucchini is a cheesy and comforting gratin that combines sautéed zucchini, spinach, basmati rice, and fresh herbs in a creamy egg mixture, topped with Gruyère and Parmesan cheese.
4 tablespoons (½ stick) unsalted butter, melted, divided
Good olive oil
6 scallions, white and green parts, sliced ¼ inch across
1 pound small zucchini, sliced into ¼-inch-thick rounds (approximately 4 zucchini)
1 tablespoon minced garlic (3 cloves)
Two 10-ounce packages frozen chopped spinach, defrosted
1 cup cooked basmati rice
¼ cup chopped fresh basil leaves
¼ cup chopped fresh parsley
½ teaspoon ground nutmeg
2 tablespoons freshly squeezed lemon juice
Kosher salt and freshly ground black pepper
4 extra-large eggs
¾ cup heavy cream
¼ cup freshly grated Italian Parmesan cheese, plus extra for topping
2 ounces Gruyère cheese, grated