10 oz baby spinach leaves
1/4 cup finely chopped onion
1 garlic clove, finely chopped
2 tablespoons unsalted butter
5 oz mushrooms, thinly sliced (2 cups)
1/3 cup heavy cream
1/4 teaspoon salt
1/4 teaspoon black pepper
1/8 teaspoon freshly grated nutmeg
4 large eggs
2 tablespoons finely grated parmesan