Sunday Slow Roasted Vegetable Lasagna

Name: Sunday Slow Roasted Vegetable Lasagna
Prep time: 30 min
Cook time: 1 h 30 min
Total time: 2 h
Yield: 8 servings
Ingredients: 2 zucchini, sliced; 2 bell peppers, chopped; 1 large onion, diced; 8 ounces mushrooms, sliced; 2 tablespoons olive oil; Salt and pepper to taste; 9 lasagna noodles, cooked; 2 cups ricotta cheese; 1 egg; 1 cup grated Parmesan cheese; 3 cups shredded mozzarella cheese; 4 cups marinara sauce; Fresh basil for garnish

Highlighted under: Baking & Desserts

I love how this Sunday Slow Roasted Vegetable Lasagna captures the essence of Sunday family dinners. With layers of tender vegetables perfectly slow-roasted and combined with rich cheeses and homemade marinara sauce, each bite feels like a warm hug. This recipe is my go-to for cozy gatherings, and it allows me to pack in the good stuff while pleasing even the pickiest eaters. The slow roasting brings out the natural sweetness of the vegetables, making this dish deeply satisfying and flavorful. Trust me, it will become a staple in your kitchen too!

Created by

Camilla Rhodes

Last updated on 2026-01-14T02:13:16.039Z

My journey with this Sunday Slow Roasted Vegetable Lasagna started when I experimented with vegetable combinations for a family gathering. I found that roasting the vegetables not only enhances their flavors but also gives the dish a gourmet feel. Each layer of roasted zucchini, bell peppers, and mushrooms adds a delightful texture that complements the creamy cheese perfectly.

One key tip I’ve discovered is to let the lasagna rest for at least 15 minutes before slicing. This allows the layers to set and ensures each slice holds its shape beautifully. It has become a beloved recipe in our home, and I’m excited for you to try it!

        Reasons You'll Love This Lasagna
        Layers of flavorful, slow-roasted vegetables
Rich and creamy cheese that ties everything together
A comforting dish that's perfect for family gatherings

      

Perfecting the Roasted Vegetables

The key to making this lasagna truly special is in the slow roasting of the vegetables. By roasting at a high temperature of 425°F (220°C), you allow the natural sugars in the vegetables to caramelize, which enhances their flavor significantly. This not only improves the taste but also contributes to a delightful texture that contrasts nicely with the creamy cheeses in the dish.

Make sure to spread the vegetables in a single layer on the baking sheet. Crowding them can lead to steaming rather than roasting, which might prevent that lovely caramelization you're aiming for. You want to see golden edges and a slightly wilted appearance, indicating they're perfectly cooked and ready to be layered into the lasagna.

Layering Strategy for Maximum Flavor

When assembling the lasagna, take care to stagger your ingredients for the best results. By layering the noodles, roasted vegetables, and cheese in this order, each bite captures the full spectrum of flavors and textures. Don’t hesitate to sprinkle a bit of extra mozzarella or Parmesan between the layers for more cheesy goodness—it helps create a delightful crust on top.

To prevent the lasagna from becoming too watery, use a thick marinara sauce. If your sauce is too runny, consider simmering it on the stove for a few extra minutes to thicken it up. A thicker sauce ensures that the lasagna holds its shape when sliced and enhances the overall texture of the dish.

Ingredients

Gather these fresh ingredients to make your lasagna delightful:

For the Roasted Vegetables

2 zucchini, sliced
2 bell peppers, chopped
1 large onion, diced
8 ounces mushrooms, sliced
2 tablespoons olive oil
Salt and pepper to taste

For the Lasagna

9 lasagna noodles, cooked
2 cups ricotta cheese
1 egg
1 cup grated Parmesan cheese
3 cups shredded mozzarella cheese
4 cups marinara sauce
Fresh basil for garnish

Instructions

Follow these steps to prepare your lasagna:

Roast the Vegetables

Preheat your oven to 425°F (220°C). Toss the sliced zucchini, bell peppers, onion, and mushrooms in olive oil, salt, and pepper. Spread them on a baking sheet in a single layer and roast for 25-30 minutes, or until tender and slightly caramelized.

Prepare the Cheese Mixture

In a bowl, combine the ricotta cheese, egg, and half of the Parmesan cheese. Mix well and set aside.

Assemble the Lasagna

In a large baking dish, spread a layer of marinara sauce on the bottom. Add three lasagna noodles followed by half of the roasted vegetables, half of the ricotta mixture, and sprinkle with mozzarella cheese. Repeat the layers, finishing with noodles and remaining marinara sauce and mozzarella on top.

Bake the Lasagna

Cover the dish with foil and bake for 45 minutes. Then, remove the foil and bake for an additional 15 minutes, or until the cheese is bubbly and golden.

Serve and Enjoy

Let the lasagna rest for 15 minutes before slicing. Garnish with fresh basil and serve warm.

Pro Tips

For extra flavor, add a layer of fresh spinach or kale between the noodles. You can also make this dish ahead of time and refrigerate it overnight before baking.

Make-Ahead and Storage Tips

This lasagna can be made ahead of time, making it a fantastic dish for meal prep or entertaining. You can assemble the layers a day in advance and store it covered in the refrigerator. Just be sure to add a few extra minutes to the baking time if starting from cold to ensure everything is heated through properly.

If you have leftovers, you can keep them in an airtight container in the fridge for up to five days. For longer storage, this lasagna freezes beautifully. Wrap individual portions tightly in plastic wrap and then in aluminum foil before placing in the freezer. It can last for up to three months, and reheating is as simple as placing it in the oven at 350°F (175°C) until heated through.

Serving Suggestions

Garnishing your lasagna with fresh basil not only adds a pop of color but also a refreshing flavor that complements the richness of the cheeses and roasted vegetables. You might also try a drizzle of balsamic reduction for a touch of sweetness and acidity, which can elevate the dish even further.

For a complete meal, serve this lasagna with a light side salad dressed in lemon vinaigrette or a simple garlic bread. The refreshing elements help balance the richness of the lasagna, making it a perfect centerpiece for a cozy family gathering.

Questions About Recipes

→ Can I use other vegetables?

Absolutely! Feel free to mix and match with your favorite vegetables like spinach, eggplant, or carrots.

→ Can I make this lasagna ahead of time?

Yes, you can assemble it a day in advance, cover it, and refrigerate it. Just add a little extra cooking time if baking straight from the fridge.

→ Is it possible to make this dish gluten-free?

Certainly! Use gluten-free lasagna noodles and ensure your marinara sauce is also gluten-free.

→ How should I store leftovers?

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven to retain the best texture.