4 tbsp. butter
1/2 c. finely chopped onion
1/4 c. flour
1/2 tsp. salt
1/8 tsp. pepper
2 1/3 c. chicken broth
1 (13 oz.) can evaporated milk
8 oz. broken spaghetti, cooked and drained
2 cans solid pack tuna, drained
Fresh or canned mushrooms, sliced
1 (10 oz.) pkg. frozen peas, cooked and drained
1 c. grated Parmesan cheese
1/2 c. chopped parsley (optional)

Melt butter and add onion; cook until tender. Stir in flour, salt, and pepper. Gradually stir in chicken broth and evaporated milk. Cook, stirring constantly, until mixture boils and thickens, about 10 minutes. Stir in spaghetti, tuna, mushrooms, peas, Parmesan cheese, and parsley. Toss mixture well so spaghetti is coated. Cover and simmer 10 minutes or until thoroughly heated.