1-Step 1: Prepare Your Equipment and Oven Start by preheating your oven to 400 degrees F. This temperature ensures the cheese melts and bubbles beautifully while the ravioli cooks through evenly. While the oven heats, grab a 9×13 baking dish and give it a generous coating of cooking spray. This prevents the cheese from sticking and makes serving much easier. If you love baked pasta dishes like this one, you might also enjoy this classic lasagna recipe for another comforting dinner option.

2-Step 2: Create the First Layer Take your jar of marinara sauce and spread half of it evenly across the bottom of your prepared baking dish. This sauce layer serves as the foundation and prevents the ravioli from sticking while adding moisture that helps everything cook perfectly. Use the back of a spoon or a spatula to spread it into an even layer, making sure the corners are covered.

3-Step 3: Add the First Ravioli Layer Take your frozen ravioli straight from the freezer (no thawing needed!) and arrange half of them in a single layer on top of the sauce. You can place them in neat rows or just spread them out to cover the surface. The ravioli should be mostly touching but not overlapping too much, as they need room to cook evenly.

4-Step 4: Add the First Cheese Layer Sprinkle 1 cup of shredded mozzarella cheese over the ravioli, followed by 1/4 cup of freshly grated Parmesan cheese. Try to distribute the cheese evenly so every bite gets that wonderful cheesy goodness. The mozzarella provides the stretch while the Parmesan adds a nutty, salty depth of flavor.

5-Step 5: Build the Second Layer Now repeat the layering process. Spread the remaining marinara sauce over the cheese, then arrange the rest of your frozen ravioli on top. Finish with a final layer of sauce spread over the ravioli. This sauce on top keeps the ravioli moist during baking.

6-Step 6: Add the Final Cheese Topping Top everything with the remaining 1 cup of mozzarella cheese and the remaining 1/4 cup of Parmesan cheese. This top layer will get golden and bubbly in the oven, creating that irresistible cheese pull everyone loves. For more inspiration on creating delicious cheese-based dishes, check out this helpful guide to cheese nutrition.

7-Step 7: Cover and Bake Take a piece of aluminum foil and spray one side with cooking spray (this prevents the cheese from sticking to the foil). Place the foil sprayed-side down over the baking dish and seal the edges. Bake at 400 degrees F for 30 minutes. The foil traps steam and helps the frozen ravioli cook through without drying out.

8-Step 8: Uncover and Finish Baking After 30 minutes, carefully remove the foil. The ravioli should be tender and the sauce bubbly. Return the uncovered dish to the oven for another 15 minutes. This final uncovered baking time allows the cheese on top to melt completely and develop those beautiful golden spots.

9-Step 9: Rest and Serve Remove the Ravioli Lasagna from the oven and let it rest for 5 minutes before serving. This resting period is important because it allows the layers to set slightly, making it much easier to cut and serve neat portions. Garnish with fresh basil leaves if desired for a pop of color and fresh flavor. Your delicious homemade lasagna is now ready to enjoy!