Greek Spinach Pie

Bahan-bahan (12 porsi)

• 6 sheets phyllo pastry (17x13-inches each), (defrosted if frozen)
• 4 tablespoons unsalted butter, (melted)
• 1 tablespoon olive oil
• 1 large onion, (finely chopped)
• 20 ounces frozen chopped spinach, (thawed and squeezed dry)
• 2 cups ricotta cheese
• 8 ounces crumbled feta cheese
• 8 ounces grated Monterey Jack cheese
• 2 large eggs
• 3 tablespoons finely chopped fresh dill
• 3 tablespoons finely chopped fresh parsley
• ¼ teaspoon salt
• ¼ teaspoon freshly ground black pepper