[header] How to make ravioli lasagna [title] Preheat the oven and prepare a pan. [step] Turn the oven on to 350 degrees f (180 c). Get out a 9 x 13-inch (23 x 33-cm) baking dish. 
Spray it with cooking spray to ensure the ravioli lasagna doesn't stick. Set the pan aside while you make the lasagna.