Heat oven to 350°F. Grease hotel pan.
Combine macaroni and Extra Melt Monterey Jack Cheese Sauce in large bowl; fold in Shredded Parmesan and Cheddar cheese. Transfer to prepared pan.
Bake macaroni and cheese 25 minutes or until heated through and browned on top. Hold hot until service.
Add color and spice by topping this mac and cheese with sliced roasted jalapeños just after baking.