Spinach Sheet Pan Quiche

Name: Spinach Sheet Pan Quiche
Cuisine: European, Mediterranean, French
Ingredients: 1 2/3 cups (215 grams) all-purpose flour; 3/4 teaspoon kosher salt; 12 tablespoons (170 grams) cold unsalted butter, diced; 3 tablespoons (45 grams) very cold water; Nonstick spray oil, for coating pan; 3/4 cup (176 grams, 6 ounces, or 3/4 of an 8-ounce brick) cream cheese, soft at room temperature; 2/3 cup (155 ml) half-and-half or 1/3 cup each whole milk and heavy cream; 6 large eggs; 2 10-ounce (283-gram) packages frozen chopped spinach, thawed; 1 cup (115 grams or 4 ounces) grated cheddar or gruyere; 1/2 cup (50 grams) finely grated Parmesan; 1 small bundle (2 to 3 ounces or about 8 thin green onions) thinly sliced; 1 teaspoon kosher salt; 1/2 teaspoon freshly ground black pepper