Roasted Vegetable Lasagna
Not rated yet. Be the first.
Eggplant, zucchini and peppers roasted first, spinach squeezed dry, and a full fifteen-minute rest make a lasagna that cuts into tall, clean squares. The uncle who swears he doesn't like vegetables will ask for a second.
The short version
Roast eggplant, zucchini, peppers and garlic at 450°F until browned. Layer with noodles, spinach-ricotta, marinara and mozzarella, bake covered 30 minutes at 375°F, then uncovered until bubbling. Rest 15 minutes before you cut it.
What makes ours better
why ours wins the argument at dinner
-
Roast the vegetables first. Raw zucchini and eggplant release water into the pan and give you a soggy middle. Roasting drives that water off and browns the edges, so every layer tastes concentrated instead of steamed.
-
Squeeze the spinach dry. Thawed frozen spinach holds a surprising amount of water. Wring it out in a clean towel and the ricotta filling stays thick enough to slice.
-
Mix roasted garlic into the cheese. The garlic roasts alongside the vegetables and turns sweet and soft. Mashed into the ricotta, it flavors every bite without any raw bite.
-
Rest it a full 15 minutes. The layers need time to settle and the cheese needs to firm up. Cut it straight from the oven and it slides apart; wait and you get clean squares.
What you need
the stars of the show
- Eggplant1 pound
- Zucchini1 pound
- Red bell peppers2 medium
- Whole-milk ricotta15 ounces
- Frozen chopped spinach10 ounces
- Grated Parmesan¼ cup
- Chopped fresh basil¼ cup
- Dried lasagna noodles12 ounces
Roasted vegetables
Filling
Assembly
read it twice. buy it once.
Steps
apron on. phone down. mostly.
-
Roast the vegetables
Heat the oven to 450°F with two racks in the upper and lower thirds. Toss the eggplant, zucchini, peppers and garlic cloves with the oil, salt and pepper, then spread over two rimmed baking sheets in a single layer. Roast 20 minutes, stir, swap the pans top to bottom, and roast 15 to 20 minutes more, until the vegetables are soft and browned at the edges.
Crowded pans steam instead of brown. Use two sheets, even if one looks big enough.
About 40 min. Cook mode has a timer for this step.
-
Boil the noodles
While the vegetables roast, boil the noodles in well-salted water until barely tender, a minute or two short of the package time. Drain, rinse briefly under cool water, and lay them flat on a clean towel and blot dry.
They bake for another 50 minutes. Fully cooked noodles turn mushy.
-
Mix the filling
Squeeze the peeled roasted garlic cloves into a large bowl and mash them. Add the ricotta, spinach, egg, Parmesan, basil, salt and pepper and stir until evenly mixed. Reduce the oven to 375°F.
-
Layer the lasagna
Spread ½ cup marinara over the bottom of a greased 13×9-inch baking dish. Add a layer of 3 noodles, slightly overlapping. Top with one-third of the filling, one-third of the roasted vegetables, a quarter of the mozzarella and a sprinkle of Parmesan, then ½ cup marinara. Repeat twice more. Finish with a fourth layer of noodles, the remaining marinara and the remaining cheeses.
Spread the filling right to the edges so the corners don't dry out.
-
Bake covered
Set the dish on a baking sheet to catch drips. Cover loosely with foil, tenting it so it doesn't touch the cheese, and bake 30 minutes.
About 30 min. Cook mode has a timer for this step.
-
Uncover and brown
Remove the foil and bake until the top is golden and the sauce bubbles at the edges, 20 to 25 minutes more.
About 20 min. Cook mode has a timer for this step.
-
Rest, then cut
Let the lasagna stand 15 minutes before cutting. The layers will firm up and slice into clean squares.
About 15 min. Cook mode has a timer for this step.
Good to know
things I learned the hard way, so you can skip that part
- Swap in whatever vegetables look good. Mushrooms and red onion roast well at the same temperature. Keep the total at about 2½ pounds so the layers stay balanced.
- Use block mozzarella you shred yourself. Pre-shredded cheese is coated to keep it loose, and it melts less smoothly.
- Roast the vegetables a day ahead and refrigerate. Assemble and bake the next day, adding 10 minutes to the covered bake if the dish goes in cold.
- Storage. Refrigerate covered up to 4 days. Freeze cut squares wrapped individually up to 3 months. Reheat squares covered at 350°F for 20 to 25 minutes, or in the microwave.
Questions, answered
asked and answered at the kitchen counter
How do I keep vegetable lasagna from being watery?
Roast the vegetables until browned, squeeze the thawed spinach dry, and use whole-milk ricotta rather than a wetter low-fat one. Let the finished lasagna rest 15 minutes so the juices settle back into the layers.
Can I make vegetable lasagna ahead of time?
Yes. Assemble it up to a day ahead, cover tightly and refrigerate. Bake straight from the fridge and add about 10 minutes to the covered bake. You can also freeze it unbaked for up to 3 months.
Do I have to boil the noodles?
Not if you use oven-ready noodles. Add an extra 5 to 10 minutes to the covered bake and make sure the sauce is not too thick, since the noodles need liquid to soften.
Can I use other vegetables?
Yes. Mushrooms, red onion, fennel and butternut squash all roast well. Skip watery raw vegetables like fresh tomatoes or raw spinach, which add moisture without browning.
Is vegetable lasagna freezer-friendly?
Very. Freeze it baked in single portions or unbaked in the dish, wrapped well. Thaw baked portions overnight in the fridge before reheating.
What size pan do I need?
A 13×9-inch dish that is at least 2 inches deep. Set it on a baking sheet in the oven in case the sauce bubbles over.
From the table
Made it? Tell me everything. Especially if somebody said it was better than their mother’s. I’ll keep your secret.
Made it?
stars first, story second. I read every one.
Tap a star
- No reviews yet. Yours would be the first, and I’d read it twice.
Find it in
Published October 29, 2026.