GREEK LASAGNA PASTITSIO

Name: GREEK LASAGNA ...(PASTITSIO)
Ingredients: 8 oz elbow macaroni, ..cooked; 1-1/2 lb ground beef; 1 large onion.....chopped fine; 1 clove garlic.....chopped fine; 1 can(s) diced tomatos; 1/8 tsp salt, and pepper... each; 1/4 tsp dried oregano; 1/4 tsp ground cinnamon; 3 Tbsp butter; 3 Tbsp flour; 1-1/2 c milk; 1 egg....beaten; 1/2 c parmesan cheese