Lynn's Recipes - Pastitsio - Greek Meat and Pasta Casserole

Ingredients

• 1 package (7 ounces) uncooked elbow macaroni
• 1 pound of ground beef or lamb
• 1 medium onion, chopped
• 1 garlic clove, chopped
• 1 can (8 ounces) tomato sauce
• 1 teaspoon salt, divided
• ¼ teaspoon dried oregano
• 1/8 teaspoon black pepper
• ¼ teaspoon ground cinnamon, optional
• ½ cup grated Parmesan cheese, divided
• 3 Tablespoons butter
• 3 Tablespoons all purpose flour
• 1-1/2 cups milk
• 1 egg, lightly beaten