Greek Moussaka

Ingredients

• 3 tablespoons extra virgin olive oil
• 2 pounds ground beef or turkey
• 1 large yellow onion, diced
• 3-4 cloves garlic finely chopped or grated with a microplane
• 1 28 ounce can tomatoes, peeled, seeded and crushed
• 1 teaspoon cinnamon
• Kosher salt and freshly ground black pepper
• 1 cup unsalted butter
• 1 cup all purpose flour
• 3 egg yolks
• 4 cups whole milk
• Freshly grated nutmeg to taste