• Prepare the pasta according to package directions.

Toast the breadcrumbs

• Melt 1/2 tablespoon butter into a skillet
• Add Panko and cajun spice to melted butter and toast until slightly brown. It's better to go a little under done so they can brown up in the oven
• Allow the breadcrumbs to cool while you prepare the sauce.

Prepare the sauce

• Pre heat your milk in the microwave for 45 seconds - just enough to take the chill out of it.
• Melt butter in a sauce pan over medium heat and let it heat until it becomes foamy.
• Mix in flour. Cook it for a minute while stirring constantly
• Slowly add warmed milk to the butter mixture 1/4 cup at a time. Whisk it continually until combined. Add Mustard powder.
• Once all of the milk is added, cook for a few minutes while whisking it. Do not let it boil. You will feel the sauce start to thicken. It's ready for cheese when you rub a small amount between your fingers and it feels silky.
• Remove from heat and stir in your cheese until it's melted and mixed into the sauce.
• Once the cheese is incorporated, use a cooked noodle to taste your sauce. If it doesn’t taste cheesy enough try adding a little more salt to bring out the flavor.
• Combine the pasta and sauce and spread into an oven safe dish.

Toppings

• Spread toasted breadcrumbs across the top.
• Place your pasta in the broiler to toast the breadcrumbs the last little bit. Mine took 3 minutes, but keep an eye on it.