- Boil some water and cook 1 pound of pasta until al dente. 
- Pre-heat your smoker to 225 degrees. Hickory is ideal for this recipe. 
- Greate 2 cups each of Cheddar and Gouda and 1 cup of Parmesan. 
- Melt ½ cup of butter in a pan and slowly add in ½ cup of flour to make a roux. Whisk until it has a smooth paste-like texture. 
- Whisk in 3 teaspoons of mustard powder. 
- Mix 2 teaspoons of smoked paprika, 1 teaspoon of ground pepper and ½ teaspoon of cayenne pepper. Add half of the spice mix to the roux. 
- Stir in 4 cups of half and half followed by all of the cheese. Stir on a medium heat until the cheese has melted. 
- Comine the cooked pasta and cheese sauce. 
- In a small pan heat 1 tablespoon of butter and add 1 cup of panko bread crumbs for the topping. Heat until slightly browned. 
- Stir in the rest of the spice mix and then sprinkle on top of the mac and cheese. 
- Put your mac and cheese in the smoker for 1 hour at 225.  
- Remove from the smoker when done and serve right away while it's still hot.