Name: Best Vegetarian Lasagna Recipe
Prep time: 25 min
Cook time: 1 h 5 min
Total time: 1 h 30 min
Cuisine: Italian
Ingredients: 2 tablespoons extra-virgin olive oil; 8 ounces cremini mushrooms, stemmed and quartered; 1 red bell pepper, stemmed, seeded, and cut into 1-inch pieces; 1 medium zucchini, cut into ½-inch pieces; ½ medium yellow onion, cut into ½-inch pieces; Sea salt and freshly ground black pepper, to taste; 3 cups marinara sauce (24 ounces); 3 cups fresh spinach; 15 lasagna noodles; 3 cups whole milk ricotta cheese (24 ounces); 3 garlic cloves, grated; 2 teaspoons lemon zest; 1 teaspoon sea salt; Freshly ground black pepper, to taste; 2 cups grated low-moisture, part-skim mozzarella cheese; ½ cup grated pecorino cheese; Fresh basil leaves or chopped fresh parsley

Jump to Recipe· 4.2 from 8 reviews

If you are on the hunt for the ultimate comfort food that is wholesome, hearty, and bursting with vibrant flavors, this Best Vegetarian Lasagna Recipe will become your new go-to. Every layer is a delightful harmony of roasted vegetables, creamy ricotta filling, savory marinara, and melty cheese, all baked to golden perfection. This dish combines simplicity and sophistication, transforming humble ingredients into something truly spectacular that everyone at the table will adore.

Ingredients You’ll Need

The image shows ingredients for cooking, laid out on a white marbled surface. In the center, there is a dark wooden cutting board with chopped green zucchini pieces scattered on its surface next to a large knife. To the top right of the board, a white bowl is filled with whole brown mushrooms, and fresh green spinach leaves are placed nearby on the right side. On the lower right, a white bowl is full of soft white ricotta cheese, and just above it is a white bowl with shredded white cheese. To the left, there is half a white onion on the cutting board and a bulb of garlic resting nearby. Yellow dried lasagna sheets are placed on the board and extending to the marbled surface. On the top left, diced red bell pepper is in a white bowl. A wooden pepper grinder, a lemon, a glass bottle of oil, and a small white bowl filled with grated cheese or seasoning are positioned around the cutting board. A jar of red tomato sauce sits next to the lasagna sheets, and a beige and white striped cloth is placed on the bottom left corner. Photo taken with an iphone --ar 4:5 --v 7

Each ingredient in this recipe is carefully chosen to build the perfect texture and balance of flavors for the Best Vegetarian Lasagna Recipe. The roasted veggies add depth and sweetness, the cheeses bring creaminess and richness, and the herbs provide that fresh finishing touch.

Extra-virgin olive oil: For roasting vegetables and adding a fruity aroma that enhances every bite.
8 ounces cremini mushrooms (stemmed and quartered): Earthy and meaty, they give the lasagna a wonderful umami flavor.
1 red bell pepper (stemmed, seeded, and cut into 1-inch pieces): Adds sweetness and vibrant color to brighten the dish.
1 medium zucchini (cut into ½-inch pieces): Provides a tender texture that balances the roasted vegetables beautifully.
½ medium yellow onion (cut into ½-inch pieces): Adds natural sweetness once roasted.
Sea salt and freshly ground black pepper: Essential for seasoning and bringing all the flavors together.
15 lasagna noodles*: The classic layered foundation of the dish that holds everything together.
3 cups marinara sauce (24 ounces): Rich and tangy, it ties the layers with a luscious tomato flavor.
3 cups fresh spinach: A fresh, leafy element that adds color and nutrition.
2 cups grated low-moisture, part-skim mozzarella cheese: Melts beautifully for that signature gooey texture.
½ cup grated pecorino cheese: Adds a sharp, salty kick to finish the cheese blend.
Fresh basil leaves or chopped fresh parsley (for garnish): Provides a fragrant, fresh herbal note as a final touch.
3 cups whole milk ricotta cheese (24 ounces): Creates a creamy, luscious layer that balances the robustness of roasted vegetables.
3 garlic cloves (grated): Infuses the ricotta with subtle warmth and depth.
2 teaspoons lemon zest: Adds brightness and a hint of citrus that lifts the ricotta filling beautifully.
1 teaspoon sea salt: Enhances all the other flavors.
Freshly ground black pepper: To taste, for mild heat and complexity.

How to Make Best Vegetarian Lasagna Recipe

Step 1: Roast the Vegetables

Begin by preheating your oven to 425°F and lining a baking sheet with parchment paper while oiling a 9×13-inch baking dish. Toss the mushrooms, red bell pepper, zucchini, and onion in olive oil, sea salt, and freshly ground black pepper. Lay them out evenly on the baking sheet before roasting for 20 to 25 minutes until they’re tender and start to brown at the edges. This roasting step intensifies the flavors and adds a lovely caramelized sweetness, which is key for a rich vegetarian lasagna.

Step 2: Cook the Lasagna Noodles

While your veggies are roasting, bring a large pot of salted water to a boil. Cook the lasagna noodles according to the package instructions until al dente. Once drained, toss the noodles with a drizzle of olive oil to prevent sticking. The al dente noodles will hold their shape and texture through baking, ensuring each bite layers perfectly.

Step 3: Prepare the Ricotta Filling

In a large bowl, mix whole milk ricotta cheese with grated garlic, fresh lemon zest, sea salt, and lots of freshly ground black pepper. This creamy mixture adds a decadent, tangy note that contrasts beautifully with the roasted vegetables and marinara sauce. Don’t be shy with the pepper—it really boosts the flavor.

Step 4: Assemble the Lasagna

Start by spreading 1 cup of marinara sauce evenly on the bottom of your prepared baking dish. Then lay down a layer of noodles, followed by half the ricotta filling. Spread the ricotta carefully to create an even layer. Next, spread half of the fresh spinach over the ricotta, then add half of the roasted vegetables. Dot this with about ⅔ cup of marinara sauce. Repeat this layering sequence with noodles, remaining ricotta, spinach, vegetables, and another ⅔ cup of sauce. Top with a final layer of noodles.

Step 5: Add Cheese and Bake

Spread the remaining ⅔ cup of marinara sauce over the top noodles. Evenly sprinkle the mozzarella and pecorino cheeses on top. Bake at 400°F for 30 minutes, or until the cheese is beautifully browned and bubbling. After baking, let your lasagna stand for 20 minutes before slicing. This resting time allows the layers to settle and makes serving a breeze.

How to Serve Best Vegetarian Lasagna Recipe

A slice of lasagna is shown on a white plate with a smooth matte finish. The lasagna has five visible layers: the top is a golden brown baked cheese layer with a slightly crispy texture and scattered grated cheese, topped with fresh green basil leaves. Below that is a rich red tomato sauce layer with small vegetable pieces, followed by a thin beige pasta sheet with ruffled edges. The next layer consists of a white creamy cheese mixed with chunky pieces of green zucchini and mushrooms. Underneath is another pasta sheet followed by more vegetables and cheese, giving the lasagna a colorful and textured look. Around the plate, there are small fresh basil leaves and a light sprinkle of grated cheese. The scene is set on a white marbled surface with a blurry background showing a white baking dish of lasagna, a wooden bowl with grated cheese, stack of dark green plates, a fork, and a pepper grinder. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

Fresh basil leaves or a sprinkle of chopped fresh parsley add a bright, herbal finish that complements the rich cheese and roasted vegetables perfectly. Not only does this boost the flavor, but the green garnish also adds a beautiful pop of color to your plate.

Side Dishes

This lasagna pairs wonderfully with a crisp green salad dressed lightly with lemon vinaigrette or a simple garlic bread for soaking up every last bit of sauce. You want something fresh and light on the side to balance the decadent, cheesy layers of the lasagna.

Creative Ways to Present

For a twist, you can serve individual portions in small ramekins or a stylish cast iron skillet. Layered in mini servings, this dish can be the star of any dinner party, making it fun and approachable. Adding a drizzle of extra virgin olive oil or a sprinkle of red pepper flakes just before serving can elevate your presentation and flavor profile too.

Make Ahead and Storage

Storing Leftovers

Allow your lasagna to cool completely before covering it tightly with plastic wrap or transferring to an airtight container. Stored in the refrigerator, your leftovers will stay fresh for up to 4 days, making for fantastic next-day meals that taste even better as the flavors meld.

Freezing

The Best Vegetarian Lasagna Recipe freezes wonderfully. Wrap it securely with plastic wrap and then aluminum foil or place it in a freezer-safe container. It can be frozen for up to 3 months without losing its delicious texture and flavor.

Reheating

To reheat, thaw the lasagna overnight in the fridge if frozen. Warm individual slices in the microwave or reheat the whole dish covered with foil in a 350°F oven for about 20-30 minutes until heated through. For a crispy top, uncover during the last 5 minutes of baking.

FAQs

Can I use no-boil lasagna noodles?

Absolutely! No-boil noodles are a convenient alternative. Just be sure to spread the marinara sauce evenly to ensure they cook through properly during baking.

What other vegetables can I add or substitute?

Feel free to get creative with zucchini, eggplant, spinach, or even kale. Roasting brings out sweetness and depth, so keep that technique to maximize flavor.

Is this recipe suitable for vegan diets?

This recipe is vegetarian but not vegan due to the cheeses used. However, you can swap ricotta and cheeses for plant-based alternatives to make a vegan version.

How can I make this dish gluten-free?

Use gluten-free lasagna noodles and verify that your marinara sauce and any cheese used do not contain gluten ingredients. This will maintain the dish’s integrity without sacrificing taste.

Can I prepare this dish ahead for a party?

Yes! You can fully assemble it a day ahead, keep it refrigerated, and bake it fresh on the day you plan to serve. This makes entertaining so much easier and stress-free.

Final Thoughts

This Best Vegetarian Lasagna Recipe is truly a gem of comfort food, packed with fresh, wholesome ingredients that make it both delicious and nourishing. Whether you’re a vegetarian or simply want to enjoy a satisfying meatless meal, this dish offers all the richness and joy of traditional lasagna with a vibrant vegetable twist. Give it a try and prepare to impress yourself and your loved ones with every flavorful, cheesy bite!