Crunchy Ranch Tuna Pasta

1 package Tuna Helper creamy Parmesan
2 1/2 cups hot water
1/2 cup milk
1 can tuna, drained
1/2 cup creamy ranch dressing
1/2 cup sour cream
1 can (2.8 oz) French fried onions

Stir together uncooked pasta, sauce mix, hot water, milk and tuna in skillet. Heat to boiling, stirring occasionally. Reduce heat; cover and simmer 6 minutes, stirring occasionally, until pasta is tender. Stir in dressing and sour cream. Sprinkle with onions.

Serves 5