04Bring the water back to a boil, and add the pasta. Cook the pasta for a minute less than the instructions on the package indicate. It should still be a little underdone, as it will finish cooking in the oven. Drain, and transfer to the bowl with the tomato sauce and chard. Add 1/4 cup of the Parmesan, and stir together until the pasta is thoroughly coated with the sauce. Transfer to the baking dish. Sprinkle the remaining Parmesan over the top, and drizzle on the olive oil.
05Bake in the preheated oven until the casserole is bubbly and the top just beginning to color, about 30 minutes. Remove from the heat, and let stand for 5 to 10 minutes before serving.