Heat soup, wine and cheese in 2-quart saucepan or chafing dish over medium heat, stirring occasionally, until cheese is melted. Stir in onions, garlic powder and pepper sauce. Pour into fondue pot or chafing dish to keep warm.
Spear vegetables and bread pieces with fondue forks, and dip into fondue. (If fondue becomes too thick, stir in a small amount of dry white wine or apple juice.)