Preheat the oven to 350 degrees F.

Shred the cheeses and mix together. Set aside about 1/3 of the cheese for the top later.

Cook pasta according to package directions, for 1-2 minutes less than the full time given to keep it slightly chewy.

Melt the butter in a large saucepan over medium heat. Stir in the flour and cook for 1 minute.

Slowly whisk in the half & half. Continue stirring until the sauce thickens, about 5 minutes.

Add salt, white pepper, garlic powder, and smoked paprika, mixing well to combine.

Stir in 2/3 of the shredded cheese until melted, then add the cooked pasta and mix to coat.

Transfer the mixture to a 9x13 inch baking dish and spread evenly. Top with the remaining cheese.

Bake at 350 degrees F for 25-30 minutes, until melted and bubbly. Broil for an extra 1-2 minutes for a crispy top.

Serve warm.

Crush Ritz crackers and mix with melted butter, sprinkle over the top before baking.