Begin by making the Buffalo chicken: Preheat the oven to 375 degrees.
Place the breasts in a small baking dish and top them with three tablespoons of sliced butter. Cover with foil and bake for thirty minutes.
Meanwhile, in a small skillet, melt the rest of the butter, and then stir in the rest of the ingredients. Shred the cooked chicken and add it to the sauce. Cover to keep warm.
Next, make the Blue Cheese Dressing: process all the ingredients in a food processor until smooth.
Next, make the cheese sauce: In a small bowl, toss together the cheese and cornstarch. In a two quart saucepan, heat the milk and bring it to a simmer. Turn the heat to low and stir in the cheese. Whisk until the sauce thickens. Set aside and cover to keep warm.
For the Wonton cups: Brush 24 mini muffin cups with melted butter. Then, brush the top side of the wontons with melted butter, and gently place them in the muffin cups, buttered side down. Push the points down so that they lie flat. Then, brush the wontons with melted butter.
Bake at 375 degrees for about 8 minutes, until the wontons are golden and crisp. Fill each cup with two teaspoons of buffalo chicken and a teaspoon of cheese sauce. Sprinkle with red pepper and scallion and serve with the blue cheese dressing.