Creamy Spinach Casserole with Feta Greek Comfort Food

Ingredients

• 1 kg fresh spinach OR 500g frozen spinach, thawed and squeezed dry
• 1 tablespoon olive oil
• 1 medium onion, finely chopped
• 2 cloves garlic, minced
• 1/4 teaspoon ground nutmeg
• Salt and pepper to taste
• 225g feta cheese, crumbled
• 115g cream cheese, softened
• 2 large eggs, lightly beaten
• 1/4 cup grated Parmesan cheese
• 2 tablespoons chopped fresh dill (or 1 teaspoon dried)
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 2 cups whole milk
• 1/4 cup breadcrumbs
• 1 tablespoon melted butter