Pastitsio - cooking recipe

Ingredients

1 1/2 lb. ground beef
1 c. onion, chopped
1 (16 oz.) can tomatoes, crushed
1 (6 oz.) can tomato paste
1 tsp. salt
1/4 tsp. dried crushed thyme leaves
1 (7 oz.) box elbow macaroni
4 slightly beaten egg whites
1/2 c. Velveeta, cubed
1/2 c. butter
1/2 c. flour
1 tsp. salt
1/4 tsp. cinnamon
4 c. milk
4 slightly beaten egg yolks

Preparation

Brown beef and onion; drain.
Add tomatoes, paste, salt and thyme.
Simmer, uncovered, for 30 minutes, stirring occasionally. Cook macaroni.
Drain and stir in egg whites and cheese.
Add to meat mixture and put in a 13 x 9-inch dish.