I heat the oven to 375°F and grease a 9-by-13-inch baking dish.

I cook the pasta until just tender, then drain it.

I stir the chicken, pasta, marinara, and cream cheese together. I spread the mixture into the dish.

I sprinkle on the mozzarella, Parmesan, and breadcrumbs, then drizzle with olive oil.

I bake for 25 minutes, until the edges bubble and the topping turns golden.