Stir milk gradually into Sauce Mix with whisk in small saucepan until well blended. Add butter. Stirring frequently, cook on medium heat until sauce comes to boil. Reduce heat to low; simmer 2 minutes, stirring occasionally. Stir in shrimp, peas and basil.
Serve over pasta. Serve with grated Parmesan cheese, if desired.
Recipe courtesy and reprinted with permission of McCormick.com