Cut each pita bread into 4 wedges. Toast until crisp; set aside
Beat the cheese, butter, sherry, salt and Tabasco sauce in a mixing bowl until well blended. Stir in the walnuts. Spread the cheese mixture over the toasted pita wedges. Arrange the pita on a baking sheet.
Broil for 1 to 2 minutes or until the cheese topping is lightly browned and bubbly.