Stuffed Eggplant (Papoutsakia) | Chopped

Ingredients

• 2 large eggplants, halved lengthwise
• 4 tablespoons olive oil, divided
• 1/2 teaspoon salt, plus more for sprinkling eggplant
• 1/2 pound ground beef
• 1 small onion, finely chopped
• 2 cloves garlic, minced
• 1 cup crushed tomatoes
• 2 tablespoons tomato paste
• 1/4 cup red wine
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground allspice
• 1/4 teaspoon black pepper
• 2 tablespoons chopped fresh parsley
• 3 tablespoons unsalted butter
• 3 tablespoons all-purpose flour
• 1 1/2 cups whole milk, warmed
• 1/4 teaspoon ground nutmeg
• 1/2 cup grated kefalotyri or Parmesan cheese, divided
• 1 large egg yolk