Green Lentil and Vegetable Casserole

This Green Lentil and Vegetable Casserole is a wholesome and hearty dish that brings together protein-rich green lentils and a vibrant medley of seasonal vegetables. Baked to perfection, this comforting vegetarian main is perfect for a cozy family dinner or as a nutritious meal-prep option that satisfies with every bite.

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The dish features an aromatic base of sautéed onions and garlic, layered with the earthy flavors of mushrooms and bell peppers. Simmered in a savory vegetable broth with tomato paste and smoked paprika, the lentils absorb all the rich seasonings before being topped with cheese and baked until bubbling and golden.

Ingredients

• 1 cup (200 g) green lentils, rinsed
• 3 cups (720 ml) vegetable broth (use gluten-free if needed)
• 2 tablespoons olive oil
• 1 large onion, diced
• 2 garlic cloves, minced
• 2 medium carrots, diced
• 2 celery stalks, diced
• 1 red bell pepper, chopped
• 1 zucchini, chopped
• 1 cup (150 g) cherry tomatoes, halved
• 1 cup (150 g) mushrooms, sliced
• 1 teaspoon dried thyme
• 1 teaspoon dried oregano
• 1 teaspoon smoked paprika
• 1/2 teaspoon ground black pepper
• 1/2 teaspoon salt (adjust to taste)
• 2 tablespoons tomato paste
• 1 bay leaf
• 1/2 cup (50 g) grated Parmesan or vegetarian hard cheese (optional)
• 1/4 cup (15 g) fresh parsley, chopped

Instructions

Step 1

Preheat oven to 375°F (190°C).

Step 2

In a large saucepan, heat olive oil over medium heat. Add onion and garlic, sauté for 3–4 minutes until softened.

Step 3

Add carrots, celery, bell pepper, zucchini, mushrooms, and cherry tomatoes. Cook for 5–6 minutes, stirring occasionally, until vegetables begin to soften.

Step 4

Stir in lentils, tomato paste, thyme, oregano, smoked paprika, bay leaf, salt, and pepper. Mix well.

Step 5

Pour in vegetable broth and bring to a boil. Reduce heat and simmer uncovered for 20 minutes, stirring occasionally, until lentils are just tender.

Step 6

Remove the bay leaf. Transfer the mixture to a large ovenproof baking dish.

Step 7

Sprinkle with grated cheese, if using.

Step 8

Bake uncovered for 25 minutes, until the top is golden and bubbling.

Step 9

Remove from oven, let rest for 5 minutes, then garnish with fresh parsley before serving.

Zusatztipps für die Zubereitung

When simmering the lentils, ensure they are just tender to the bite before transferring them to the baking dish; this prevents them from becoming mushy during the oven phase. Additionally, using a 2-quart ovenproof dish will ensure the casserole has the perfect thickness for even browning.

Varianten und Anpassungen

For a vegan version, simply omit the cheese or use a plant-based alternative. You can also customize the dish by swapping in any seasonal vegetables you have on hand, such as diced sweet potato, fresh spinach, or chopped kale.

Serviervorschläge

This hearty casserole is best served alongside a piece of warm, crusty bread to soak up the juices or with a fresh green salad to add a crisp, light contrast to the warm lentils.

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Whether you're looking for a satisfying vegetarian main or a nutrient-dense side, this green lentil and vegetable casserole is a versatile and flavorful choice that brings the warmth of European-inspired cooking to your table.

Questions & Answers

→ Can I use other types of lentils?

Red lentils cook faster and may become too soft, while brown lentils work well but might need slightly less cooking time. Green or French Puy lentils hold their shape best and are ideal for this preparation.

→ What vegetables can I substitute?

Swap in seasonal favorites like sweet potato chunks, spinach, kale, eggplant, or green beans. The method works with any hearty vegetables that can withstand both stovetop simmering and oven baking.

→ How do I store leftovers?

Store in an airtight container in the refrigerator for up to 4 days. Reheat in the oven at 350°F (175°C) until warmed through, or microwave individual portions for 2-3 minutes.

→ Can I make this ahead?

Prepare through step 6 (before baking), cool, cover, and refrigerate for up to 24 hours. When ready to serve, bring to room temperature, add cheese topping if desired, and bake as directed, adding 5-10 minutes to baking time.

→ Is this dish freezer-friendly?

Yes, freeze in portion-sized containers for up to 3 months. Thaw overnight in the refrigerator before reheating. Note that the texture of vegetables may soften slightly after freezing.

→ What can I serve with this casserole?

Crusty bread, garlic bread, or a simple green salad complements the dish beautifully. For a heartier meal, serve alongside roasted potatoes or over cooked rice.