About This Recipe

This lasagna skips the traditional tomato sauce in favor of a carrot-based sauce that is naturally nightshade-free (just omit the optional bell pepper). The result is a rich, savory lasagna packed with vegetables and melty cheese that is satisfying for everyone — not just those avoiding nightshades.

Nightshade-Free Notes

• The sauce: Carrots, passion fruit, and herbs replace tomatoes — the mashed carrot base creates a surprisingly hearty sauce with good body and color
• Bell pepper: The one nightshade in this recipe — simply omit it for a fully nightshade-free dish
• All other vegetables (sweet potato, zucchini, spinach, mushrooms) are nightshade-free

Ingredient Notes

• Gluten-free noodles: Most GF lasagna noodles do not require pre-boiling — check your package, as oven-ready ones save a step
• Passion fruit: Adds a subtle brightness to the sauce that replaces the acidity of tomatoes; omit if unavailable and the sauce will still work
• Garlic scapes: Low-FODMAP alternative to garlic — use when in season or use garlic-infused olive oil instead.
• Oyster mushrooms: Optional but add a meaty texture; shiitake or cremini can substitute. Be mindful of FODMAP content if following a strict low-FODMAP diet.

Cooking Tips

• Drain the veggies well: Excess liquid from the sautéed vegetables will make the lasagna watery — take a few minutes to let them drain in a colander
• Mash the sauce thoroughly: The more you mash the carrots, the smoother and more sauce-like the consistency
• Let it rest: The 15–20 minute rest after baking is important — it allows the layers to set so the lasagna slices cleanly
• Make ahead: Assemble the day before, refrigerate unbaked, and add 10 minutes to the covered bake time

Modifications

• Add ricotta: Spread a layer of ricotta between the vegetables and cheese for a creamier texture
• More vegetables: Eggplant (a nightshade, so omit if needed), roasted red onion, or artichoke hearts all work well
• Dairy-free: Use plant-based mozzarella — the carrot sauce is already dairy-free
• Add heat: Red pepper flakes mixed into the sauce add a gentle kick