Step 1

Preheat oven to 350°F.

Step 2

Cook pasta to al dente in salted water according to package directions. Drain and rinse with cold water. Set aside.

Step 3

Add shrimp to a medium bowl and toss with 1 tablespoon Cajun seasoning.

Step 4

Melt 1 tablespoon butter with 1 tablespoon olive oil in a large (3.5 qt) oven proof sauté pan over medium-high heat. Add shrimp in an even layer and cook 2-3 minutes, flip over and continue to cook 2-3 minutes or until until cooked through. Remove shrimp to a cutting board. When cool enough to handle, cut into thirds. Set aside.

Step 5

To the now empty skillet (don’t wipe out) melt 4 tablespoons butter over medium heat then whisk in flour. Cook, while stirring for 2 minutes. Turn heat to low then gradually whisk in milk. Whisk cornstarch into evaporated milk and gradually add to skillet followed by all remaining spices/seasonings.

Step 6

Bring to a simmer, whisking constantly until thickened (but not overly thick). Turn heat to low then whisk in sharp cheese until melted followed by Gruyere until melted. Add shrimp and pasta and stir until evenly coated.

Step 7

Spread pasta into an even layer then top with Parmesan. Whisk panko with melted butter and evenly sprinkle on top. Bake 15-20 minutes or until hot and bubbly. Turn oven to broil to toast panko for 2-3 minutes, watching closely so it doesn’t burn.

Step 8

Let stand 5 minutes before serving.