Green Lentil and Vegetable Casserole

Featured in: Home Kitchen Staples

This nourishing casserole brings together protein-dense green lentils with a colorful array of vegetables including carrots, zucchini, bell peppers, and mushrooms. The dish gets its aromatic depth from dried thyme, oregano, and smoked paprika, while a golden topping of Parmesan and optional breadcrumbs adds satisfying texture.

Perfect for meal prep, this vegetarian and gluten-free main delivers 16 grams of protein per serving. The combination of hearty lentils and tender vegetables creates substantial comfort food that keeps well throughout the week. Serve alongside a crisp green salad and crusty bread for a complete, balanced dinner.

Updated on Wed, 28 Jan 2026 13:38:00 GMT
Freshly baked Green Lentil and Vegetable Casserole bubbling with golden Parmesan and herbs, served in a ceramic dish. Pin it
Freshly baked Green Lentil and Vegetable Casserole bubbling with golden Parmesan and herbs, served in a ceramic dish. | cozytifawt.com

I once spent a rainy Tuesday trying to clear out my crisper drawer before the local farmers market reopened. The kitchen smelled of damp earth and woodsmoke as I tossed these lentils into the pot. This casserole was not a planned masterpiece but rather a happy accident of leftover carrots and a lonely zucchini. It turned into a bubbling pan of comfort that actually made me look forward to gray afternoons. The way the herbs toasted against the lentils reminded me that simple ingredients often hold the most warmth.

My youngest brother once claimed he hated lentils until I served him a bowl of this under the guise of a rustic vegetable bake. We sat on the porch steps watching the sun dip low while he scraped every last bit of crispy parmesan from the dish. He did not even realize he was eating something healthy because the smoked paprika gave everything such a savory depth. Now it is the only thing he asks for when he visits during the winter months.

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Ingredients

  • Green Lentils: These little legumes hold their shape beautifully during the baking process without turning into mush.
  • Vegetable Broth: Using a rich broth instead of water infuses the lentils with deep flavor from the inside out.
  • Aromatic Base: Onion and garlic create the foundational savory layer that supports all the other vegetables.
  • Seasonal Vegetables: Carrots and zucchini provide a lovely texture and a natural sweetness when roasted.
  • Smoked Paprika: This is the secret ingredient that adds a subtle wood fired taste to the entire casserole.
  • Fresh Spinach: It might look like a lot at first but it wilts down perfectly to add a pop of color.
  • Parmesan Cheese: The salty crust on top provides a necessary crunch that balances the tender vegetables underneath.

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Instructions

Simmer the lentils:
Bring the broth and lentils to a gentle boil in your saucepan. Let them soften over low heat until they are tender to the bite but still firm.
Saute the aromatics:
Heat your olive oil in the skillet and let the onions and garlic sizzle. They should become translucent and smell heavenly before you add anything else.
Soften the vegetables:
Toss in your carrots and zucchini and stir them frequently. You want them to just start to lose their raw edge before the tomatoes go in.
Wilt the greens:
Add the halved tomatoes and spinach at the very end so they stay vibrant. Stir the mixture until the leaves are soft and the tomatoes begin to burst.
Combine and bake:
Fold your cooked lentils into the vegetable mixture and transfer everything to your baking dish. Sprinkle the cheese and breadcrumbs on top then bake until the edges are bubbling and golden.
A hearty scoop of Green Lentil and Vegetable Casserole reveals tender lentils, carrots, and wilted spinach on a plate. Pin it
A hearty scoop of Green Lentil and Vegetable Casserole reveals tender lentils, carrots, and wilted spinach on a plate. | cozytifawt.com

There was a night when the power went out and we finished baking this by the light of a dozen tea candles. The steam rising from the dish in the dark made the kitchen feel like a cozy sanctuary from the storm outside. We ended up eating straight from the baking dish with big spoons and laughing about how things always taste better in the dark.

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Seasonal Swaps for Every Mood

Sometimes I replace the zucchini with chunks of butternut squash when the leaves start turning orange. It makes the dish feel even heartier and adds a lovely sweetness to the savory herbs. You can really use whatever is looking best at the market that week to keep it fresh. Just be sure to cut harder vegetables into smaller pieces so they cook through at the same rate.

The Art of the Topping

Achieving that perfect golden crust is more about patience than anything else. I have found that mixing the breadcrumbs with a tiny bit of olive oil helps them brown more evenly across the surface. It creates a shattered glass texture that contrasts so well with the soft lentils underneath. If you are making a vegan version nutritional yeast makes a fantastic substitute for the parmesan punch.

Serving and Storing

This dish actually tastes even better the next day after the flavors have had time to mingle in the fridge. I often pack the leftovers for lunch and find myself counting down the hours until I can reheat them. It keeps well for several days without losing its charm or texture. Even cold it makes a surprisingly good topping for a thick slice of toasted sourdough.

  • Serve it alongside a crisp green salad to cut through the richness of the casserole.
  • Store any extras in an airtight container to keep the moisture locked in.
  • Add a squeeze of fresh lemon juice over your bowl just before eating for a zesty finish.

Freshly cooked Green Lentil and Vegetable Casserole with a crispy breadcrumb topping, paired with a green salad on the side. Pin it
Freshly cooked Green Lentil and Vegetable Casserole with a crispy breadcrumb topping, paired with a green salad on the side. | cozytifawt.com

I hope this casserole brings as much warmth to your table as it has to mine over the years. Happy cooking and enjoy every bite of this rustic feast.

Recipe FAQs

Can I make this dish ahead of time?

Absolutely. Assemble the casserole up to 24 hours in advance, refrigerate covered, then bake when ready. You may need to add 5-10 minutes to the baking time if baking cold from the refrigerator.

What vegetables work best in this casserole?

Root vegetables like carrots, sweet potatoes, and squash hold their texture well during baking. Bell peppers, zucchini, and mushrooms add moisture and flavor. Feel free to use whatever seasonal vegetables you have available.

How do I store leftovers?

Store in an airtight container in the refrigerator for up to 5 days. Reheat individual portions in the microwave or warm the entire casserole in a 350°F oven until heated through, about 15-20 minutes.

Can I freeze this casserole?

Yes, freeze before baking for best results. Wrap the prepared dish tightly with plastic wrap and foil, then freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed.

What can I serve alongside this dish?

A simple green salad with vinaigrette complements the hearty casserole beautifully. Crusty gluten-free bread, roasted potatoes, or steamed green beans also make excellent sides. A light red wine like Pinot Noir pairs wonderfully.

How do I know when the lentils are properly cooked?

Taste the lentils after 20-25 minutes of simmering. They should be tender but still hold their shape, not mushy or falling apart. Drain any excess liquid before combining with the vegetables.

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Green Lentil and Vegetable Casserole

Protein-packed lentils and vegetables baked with herbs for a wholesome meal.

Prep Time
20 min
Cook Time
50 min
Total Duration
70 min
Recipe by Sawyer Ellis


Skill Level Easy

Cuisine International

Makes 4 Portions

Dietary Notes Vegetarian-Friendly, Gluten-Free

What You Need

Lentils

01 1 cup dried green lentils, rinsed
02 3 cups vegetable broth

Vegetables

01 1 medium onion, diced
02 2 cloves garlic, minced
03 2 medium carrots, sliced
04 1 medium zucchini, diced
05 1 red bell pepper, diced
06 1 cup button mushrooms, sliced
07 1 cup cherry tomatoes, halved
08 2 cups fresh spinach, roughly chopped

Herbs & Seasonings

01 2 tablespoons olive oil
02 1 teaspoon dried thyme
03 1 teaspoon dried oregano
04 1/2 teaspoon smoked paprika
05 1/2 teaspoon ground black pepper
06 1/2 teaspoon salt

Topping

01 1/3 cup grated Parmesan cheese or vegan alternative
02 1/2 cup gluten-free breadcrumbs, optional

Directions

Step 01

Preheat oven: Set oven to 375°F and allow to fully preheat.

Step 02

Cook lentils: In a medium saucepan, combine lentils and vegetable broth. Bring to a boil, reduce heat, and simmer uncovered for 20 to 25 minutes until lentils are tender but not mushy. Drain any excess liquid.

Step 03

Sauté aromatics: While lentils cook, heat olive oil in a large skillet over medium heat. Sauté onion and garlic for 2 to 3 minutes until fragrant.

Step 04

Cook root vegetables: Add carrots, zucchini, bell pepper, and mushrooms. Cook, stirring occasionally, for 5 to 7 minutes until vegetables begin to soften.

Step 05

Finish vegetables: Stir in cherry tomatoes, spinach, thyme, oregano, smoked paprika, salt, and black pepper. Cook for another 2 to 3 minutes until spinach wilts.

Step 06

Combine ingredients: Transfer cooked lentils to a large mixing bowl with sautéed vegetables. Mix well to combine.

Step 07

Transfer to baking dish: Move the mixture to a greased 2-quart baking dish. Sprinkle with Parmesan cheese and breadcrumbs if using.

Step 08

Bake casserole: Bake uncovered for 20 to 25 minutes until the top is golden and the casserole is bubbling.

Step 09

Rest before serving: Allow casserole to rest for 5 minutes before serving.

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What You'll Need

  • Medium saucepan
  • Large skillet
  • Mixing bowl
  • 2-quart baking dish
  • Chef's knife
  • Cutting board

Allergen Details

Double-check every ingredient if you have allergies and contact your doctor if you're unsure.
  • Contains milk from Parmesan cheese. Use vegan cheese if needed.
  • May contain gluten in breadcrumbs. Use gluten-free breadcrumbs if needed.
  • Always check ingredient labels for potential allergens.

Nutrition Details (per portion)

These numbers are estimates and don't replace healthcare advice.
  • Calories: 320
  • Fats: 8 g
  • Carbohydrates: 48 g
  • Proteins: 16 g

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