In a medium pan, sauté peppers and onions in olive oil until translucent, set aside.
In a medium pot, combine ½ cup heavy whipping cream, butter and both cheeses. Cook over medium-low heat until melted, whisking continuously. Add additional heavy whipping cream until you achieve the desired, creamy consistency.
Whisk in garlic powder and Worcestershire sauce. Add salt and pepper to taste. Stir in the onions and peppers.
Heat Expresco Skewers as the package directs, dip and enjoy!