1-Preheat the oven: Start by preheating your oven to 400°F and lightly spraying a 9×13-inch baking dish to prevent sticking. This sets the stage for a dish that bakes up bubbly and golden in no time.

2-First Layer and Build-Up: Begin by spreading half of one jar of marinara sauce evenly across the bottom of your prepared dish. This creates a moist base for the ravioli. Next, add half of the 40 oz frozen ravioli over the sauce, arranging them neatly for even cooking. Sprinkle 1 cup of shredded mozzarella cheese and 1/4 cup of freshly grated Parmesan on top to build that cheesy layer.

Repeat the process with the remaining sauce, ravioli, and cheeses to make another full layer. This double-layer method ensures every bite is packed with flavor. Once assembled, cover the dish with aluminum foil, making sure the sprayed side is down to avoid mess, then pop it in the oven.

3-Baking and Finishing Touches: Bake covered for 30 minutes, then remove the foil and bake for an additional 15 minutes until the cheese melts and the sauce bubbles beautifully. Let it sit for 5 minutes before serving this helps the flavors blend and makes it easier to cut. For a fresh twist, garnish with 1/3 cup chopped basil leaves if you like. If you’re looking for more oven-baked ideas, check out our Mexican enchilada lasagna for another easy favorite.