Heat the butter and oil in a 4 to 5 quart Dutch oven over medium heat until melted. Add the onions, celery, and carrots, and saute until soft (about 8 minutes). Sprinkle the flour and smoke paprika over the vegetables and stir to coat.
Tip in the chicken broth, and increase heat to medium-high. When soup begins to gently bubble, reduce heat to maintain a gentle simmer while you make the mornay.
Make the blue cheese bechamel
Melt the butter in a 2 quart pot over medium heat. Stir in the flour to create a paste (roux). Begin adding the half and half in small amounts, stirring or whisking it into the roux. When the first pour smooths out, add more and continue whisking. When you've added all of the half and half, continue heating until it begins to thicken (this could take several minutes - be patient!).
Meanwhile, reduce heat on the soup to low.
Sprinkle the ranch seasoning over the thickened bechamel and whisk until combined. Add the cheese and stir until melted.
Finish the soup
Pour the blue cheese bechamel into the soup and stir well to combine. Add the wing sauce and shredded chicken, and let warm through for 5 minutes. Taste, and season with salt, if necessary.
Serve with toppings.
Notes
* You can use packaged ranch seasoning, or make your own! Here's my recipe:1 tablespoon dried parsley1 tablespoon buttermilk powder2 teaspoons dried chives2 teaspoons dried dill1 teaspoon garlic powder1 teaspoon onion powder1/2 teaspoon kosher salt1/2 teaspoon ground black pepperMix all of the seasonings together in a small bowl.For finer results, use a spice grinder: First, pulse the chives by themselves a few times, to break them down a bit (if the pieces are large, which they often are). Then add the other green herbs and salt, and pulse a few times more. Add the remaining ingredients and pulse once or twice, just to mix.This blend will store at room temperature in an airtight jar. So tasty sprinkled over salads, sandwiches, even mac & cheese. If you plan to use the leftovers for ranch dip, add another tablespoon of the buttermilk powder to the remaining seasonings before blending with the dairy.