Classic Greek Eggplant Moussaka

Ingredients

• 3 medium eggplants, sliced into 1/4-inch rounds
• Salt, for sweating the eggplants
• 1/4 cup olive oil, divided
• 1 large onion, chopped
• 2 cloves garlic, minced
• 1 pound ground lamb or beef
• 1 can (14 oz) crushed tomatoes
• 2 tablespoons tomato paste
• 1/2 cup red wine
• 1/2 teaspoon cinnamon
• 1 teaspoon dried oregano
• 1 teaspoon dried thyme
• Salt
• pepper
• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 2 cups milk
• 1/4 teaspoon nutmeg
• 1/2 cup grated Parmesan cheese
• 1 egg, lightly beaten