Chicken Tetrazzini - cooking recipe

Ingredients

1/2 c. margarine
1/2 c. flour
5 c. chicken broth
1 c. milk
2 egg yolks
2 c. Parmesan cheese
4 c. cooked, diced chicken
1 (16 oz.) pkg. spaghetti, cooked and drained
shredded Cheddar cheese

Preparation

Melt margarine in a large skillet.
Add flour and cook 2 minutes, stirring constantly.
Slowly stir in chicken broth and milk.
Cover and simmer over low heat.
Beat egg yolks in a small bowl.
Add 4 tablespoons sauce to egg yolks very slowly, beating constantly.
Pour egg yolk mixture back into sauce and add 1 cup Parmesan cheese.
Cook over low heat, stirring until cheese is melted.
Measure 1 1/2 cups sauce.
Set aside.
Add chicken, spaghetti and remaining sauce.
Stir well.
Spoon into a large casserole.
Pour remaining 1 1/2 cups sauce over top.
Sprinkle with Parmesan cheese (1 cup) and Cheddar cheese.
Bake, uncovered, at 375\u00b0 for 20 minutes or until hot and bubbly.