This gluten-free roasted veggie lasagna is a delightful twist on the classic Italian dish. Packed with layers of zucchini, bell peppers, mushrooms, and spinach, it offers a nutritious and flavorful experience. The combination of ricotta cheese, mozzarella cheese, and parmesan cheese ensures a creamy and cheesy delight in every bite.
When preparing this recipe, you might need to visit the supermarket for some specific ingredients. Gluten-free lasagna noodles are essential for those avoiding gluten, and they can usually be found in the gluten-free section. Fresh ricotta cheese and mozzarella cheese are crucial for the creamy layers, while parmesan cheese adds a sharp, nutty flavor. Make sure to pick up fresh zucchini, bell peppers, mushrooms, and spinach for the roasted vegetable layers.

Ingredients For Gluten-Free Roasted Veggie Lasagna
Zucchini: A versatile vegetable that adds a mild flavor and tender texture to the lasagna.
Bell peppers: These colorful peppers bring a sweet and slightly tangy taste to the dish.
Mushrooms: Earthy and savory, mushrooms add depth and umami to the lasagna.
Spinach: Fresh spinach provides a nutritious and slightly bitter contrast to the creamy cheese.
Gluten-free lasagna noodles: Essential for those avoiding gluten, these noodles form the base layers of the lasagna.
Ricotta cheese: A creamy cheese that pairs perfectly with spinach for a rich filling.
Mozzarella cheese: Shredded mozzarella melts beautifully, creating gooey, cheesy layers.
Parmesan cheese: Grated parmesan adds a sharp, nutty flavor to the lasagna.
Marinara sauce: A tomato-based sauce that ties all the ingredients together with its rich and tangy flavor.
Olive oil: Used to roast the vegetables, adding a subtle richness and helping them caramelize.
Salt: Enhances the flavors of all the ingredients.
Black pepper: Adds a hint of spice and depth to the dish.
Technique Tip for This Recipe
When roasting the zucchini, bell peppers, and mushrooms, make sure to spread them out evenly on the baking sheet to ensure they roast properly and don't steam. This will help achieve a nice caramelization, enhancing the flavor of your roasted vegetables. Additionally, consider using a mix of yellow and red bell peppers for a colorful presentation and a balance of sweetness.
Suggested Side Dishes
Alternative Ingredients
zucchini - Substitute with eggplant: Eggplant has a similar texture and absorbs flavors well, making it a great alternative for roasted veggies in lasagna.
bell peppers - Substitute with butternut squash: Butternut squash provides a sweet and slightly nutty flavor that complements the other vegetables in the lasagna.
mushrooms - Substitute with eggplant: Eggplant offers a meaty texture similar to mushrooms and works well in roasted veggie dishes.
spinach - Substitute with kale: Kale has a robust texture and slightly bitter taste that can add depth to the lasagna.
gluten-free lasagna noodles - Substitute with zucchini slices: Thinly sliced zucchini can be used as a low-carb, gluten-free alternative to lasagna noodles.
ricotta cheese - Substitute with cottage cheese: Cottage cheese provides a similar creamy texture and mild flavor, making it a good substitute for ricotta.
mozzarella cheese - Substitute with provolone cheese: Provolone melts well and has a mild flavor that can replace mozzarella in lasagna.
parmesan cheese - Substitute with pecorino romano: Pecorino Romano has a similar salty and nutty flavor, making it a suitable alternative to Parmesan.
marinara sauce - Substitute with pesto sauce: Pesto sauce offers a fresh, herbaceous flavor that can be a unique twist on traditional marinara.
olive oil - Substitute with avocado oil: Avocado oil has a high smoke point and a neutral flavor, making it a good substitute for olive oil in roasting vegetables.
salt - Substitute with soy sauce: Soy sauce can add a savory umami flavor, but use it sparingly to avoid overpowering the dish.
black pepper - Substitute with white pepper: White pepper has a similar heat but a slightly different flavor profile, making it a good alternative to black pepper.
Other Alternative Recipes
How to Store / Freeze This Dish
- Allow the lasagna to cool completely at room temperature. This helps to prevent condensation, which can make the lasagna soggy when stored.
- For short-term storage, transfer the lasagna to an airtight container or cover the baking dish tightly with plastic wrap or aluminum foil. Store in the refrigerator for up to 3-4 days.
- For long-term storage, cut the lasagna into individual portions. Wrap each portion tightly in plastic wrap, then place them in a freezer-safe bag or container. Label with the date and freeze for up to 2-3 months.
- To reheat refrigerated lasagna, preheat your oven to 350°F (175°C). Place the lasagna in an oven-safe dish, cover with aluminum foil, and bake for 20-25 minutes or until heated through. Alternatively, microwave individual portions on high for 2-3 minutes.
- To reheat frozen lasagna, thaw it in the refrigerator overnight. Once thawed, follow the same reheating instructions as for refrigerated lasagna. If you're in a hurry, you can reheat directly from frozen by baking at 350°F (175°C) for 45-60 minutes, covered with foil, until heated through.
- For a crispy top layer, remove the foil during the last 10 minutes of reheating in the oven.
- If you notice any excess liquid after reheating, simply drain it off before serving to maintain the perfect texture of your lasagna.
How to Reheat Leftovers
Oven Method:
- Preheat your oven to 350°F (175°C).
- Place the leftover lasagna in an oven-safe dish.
- Cover the dish with aluminum foil to prevent the cheese from drying out.
- Bake for 20-25 minutes, or until the lasagna is heated through and the cheese is bubbly.
- Remove the foil for the last 5 minutes if you want a crispy top.
Microwave Method:
- Place a portion of the lasagna on a microwave-safe plate.
- Cover with a microwave-safe lid or another plate to retain moisture.
- Heat on medium power for 2-3 minutes, checking halfway through.
- If not heated through, continue in 30-second intervals until hot.
Stovetop Method:
- Place a non-stick skillet over medium heat.
- Add a small amount of olive oil or water to the skillet.
- Place a portion of the lasagna in the skillet and cover with a lid.
- Heat for 5-7 minutes, turning occasionally, until the lasagna is warmed through.
Air Fryer Method:
- Preheat your air fryer to 350°F (175°C).
- Place the lasagna in the air fryer basket, ensuring it is in a single layer.
- Heat for 5-7 minutes, checking halfway through to ensure even heating.
- If needed, add an additional 2-3 minutes until the lasagna is hot and the cheese is bubbly.
Best Tools for This Recipe
Oven: Used to preheat and bake the lasagna to ensure it cooks evenly and the cheese becomes bubbly and golden.
Baking sheet: Utilized to spread and roast the zucchini, bell peppers, and mushrooms.
Mixing bowl: Needed to combine the ricotta cheese and chopped spinach.
Baking dish: Essential for assembling the lasagna layers and baking the final dish.
Aluminum foil: Used to cover the baking dish during the initial baking phase to prevent the cheese from burning.
Knife: Required for slicing the zucchini, bell peppers, and mushrooms.
Cutting board: Provides a safe surface for chopping and slicing vegetables.
Measuring cups: Necessary for accurately measuring ingredients like ricotta cheese, mozzarella cheese, and marinara sauce.
Wooden spoon: Handy for spreading the marinara sauce and ricotta-spinach mixture.
Colander: Used to drain the cooked gluten-free lasagna noodles.
Cheese grater: Needed to grate the parmesan cheese if not using pre-grated cheese.
Tongs: Useful for handling the hot lasagna noodles after boiling.
Spatula: Helps in spreading the layers evenly and serving the lasagna.
How to Save Time on This Recipe
Pre-roast veggies: Roast the zucchini, bell peppers, and mushrooms in advance and store them in the fridge.
Use no-boil noodles: Opt for no-boil gluten-free lasagna noodles to skip the boiling step.
Pre-mix cheese: Combine ricotta, mozzarella, and parmesan cheeses ahead of time.
Batch cook sauce: Make a large batch of marinara sauce and freeze portions for future use.
Assemble ahead: Assemble the lasagna the night before and refrigerate until ready to bake.

Gluten-Free Roasted Veggie Lasagna
Ingredients
Main Ingredients
- 2 cups zucchini, sliced
- 2 cups bell peppers, sliced
- 1 cup mushrooms, sliced
- 1 cup spinach, chopped
- 9 sheets gluten-free lasagna noodles
- 2 cups ricotta cheese
- 2 cups mozzarella cheese, shredded
- 1 cup parmesan cheese, grated
- 4 cups marinara sauce
- 2 tablespoon olive oil
- 1 teaspoon salt
- 1 teaspoon black pepper
Instructions
- Preheat your oven to 400°F (200°C).
- Toss the zucchini, bell peppers, and mushrooms with olive oil, salt, and pepper. Spread them on a baking sheet and roast for 20 minutes.
- Cook the gluten-free lasagna noodles according to the package instructions. Drain and set aside.
- In a mixing bowl, combine ricotta cheese and chopped spinach.
- Spread a thin layer of marinara sauce on the bottom of a baking dish. Place a layer of lasagna noodles on top.
- Spread a layer of the ricotta-spinach mixture over the noodles, followed by a layer of roasted vegetables, marinara sauce, mozzarella, and parmesan cheese. Repeat the layers until all ingredients are used, finishing with a layer of cheese on top.
- Cover the baking dish with aluminum foil and bake for 40 minutes. Remove the foil and bake for an additional 10-15 minutes until the cheese is bubbly and golden.
- Let the lasagna rest for 10 minutes before serving.
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