01 -
Shred medium cheddar, Colby Jack, and mozzarella cheeses. Reserve 1 cup from each for topping.
02 -
Mince garlic cloves and divide butter into portions.
03 -
Preheat oven to 425°F. Boil water and cook pasta until slightly firm, about 2-3 minutes less than package instructions. Drain and transfer pasta to a casserole dish. Toss immediately with 4 tablespoons butter to coat evenly.
04 -
In a skillet, melt 3 tablespoons butter over medium heat. Add minced garlic and sauté until translucent without browning, about 1-2 minutes.
05 -
Whisk the flour into the melted butter and garlic mixture to form a roux. Gradually pour in reserved pasta water, heavy cream, and half and half, whisking continuously until sauce thickens to a smooth consistency.
06 -
Reduce heat to low. Stir in remaining shredded cheeses until fully melted. Fold in whipped cream cheese, onion powder, paprika, mustard powder, salt, and black pepper to develop a rich, layered flavor.
07 -
Pour cheese sauce over buttered pasta and mix gently to ensure even coverage. Evenly sprinkle reserved cheese blend over the top.
08 -
Bake for 10 minutes at 425°F. Then switch the oven to broil and broil for 2-3 minutes, watching closely, until the cheese topping is golden and crisp without burning.
09 -
Remove from oven and let rest for 5 minutes to allow the sauce to set and flavors to meld.