Spanish Mac and Cheese

Preheat broiler to high with oven rack in middle of oven. Cook pasta according to package directions in a Dutch oven. Drain, reserving 1/4 cup cooking liquid. Return pasta to pan; add reserved cooking liquid, squash, Manchego cheese, cream cheese, salt, and cayenne. Stir until well combined. Spoon mixture into an ungreased 11- x 7-inch glass or ceramic baking dish.

While pasta cooks, heat chorizo and oil in a skillet over medium-high, stirring occasionally, until chorizo is crispy and oil turns red, 5 to 6 minutes. Stir in panko. Spoon over pasta mixture in baking dish.

Broil in preheated oven until lightly toasted, 2 to 3 minutes. Sprinkle with parsley and paprika.