Green Lentil and Vegetable Casserole (Printable)

A wholesome vegetarian casserole featuring protein-packed green lentils and seasonal vegetables, baked until golden and bubbling.

# What You Need:

→ Lentils

01 - 1 cup green lentils, rinsed
02 - 3 cups vegetable broth (gluten-free if needed)

→ Vegetables

03 - 2 tablespoons olive oil
04 - 1 large onion, diced
05 - 2 garlic cloves, minced
06 - 2 medium carrots, diced
07 - 2 celery stalks, diced
08 - 1 red bell pepper, chopped
09 - 1 zucchini, chopped
10 - 1 cup cherry tomatoes, halved
11 - 1 cup mushrooms, sliced

→ Seasonings

12 - 1 teaspoon dried thyme
13 - 1 teaspoon dried oregano
14 - 1 teaspoon smoked paprika
15 - 1/2 teaspoon ground black pepper
16 - 1/2 teaspoon salt
17 - 2 tablespoons tomato paste
18 - 1 bay leaf

→ Topping

19 - 1/2 cup grated Parmesan or vegetarian hard cheese (optional)
20 - 1/4 cup fresh parsley, chopped

# How-To Steps:

01 - Preheat oven to 375°F.
02 - Heat olive oil in a large saucepan over medium heat. Add onion and garlic, sauté for 3–4 minutes until softened.
03 - Add carrots, celery, bell pepper, zucchini, mushrooms, and cherry tomatoes. Cook for 5–6 minutes, stirring occasionally, until vegetables begin to soften.
04 - Stir in lentils, tomato paste, thyme, oregano, smoked paprika, bay leaf, salt, and pepper. Mix well to combine.
05 - Pour in vegetable broth and bring to a boil. Reduce heat and simmer uncovered for 20 minutes, stirring occasionally, until lentils are just tender.
06 - Remove the bay leaf. Transfer the mixture to a large ovenproof baking dish.
07 - Sprinkle with grated cheese, if using.
08 - Bake uncovered for 25 minutes until the top is golden and bubbling.
09 - Remove from oven, let rest for 5 minutes, then garnish with fresh parsley before serving.

# Expert Tips:

01 -
  • Everything cooks in one pan before transferring to the oven, meaning minimal cleanup and maximum flavor development
  • The lentils absorb all those aromatic seasonings while becoming perfectly tender, creating a texture that satisfies even meat lovers
  • You can prep the vegetables ahead and keep them in the fridge, making this perfect for busy weeknights when you still want something homemade
02 -
  • The lentils will continue absorbing liquid during baking, so do not worry if the stovetop mixture seems a bit soupy before it goes into the oven
  • Removing the bay leaf before baking prevents anyone from getting an unpleasant surprise in their serving
  • Letting the casserole rest for those 5 minutes seems like torture when youre hungry, but it helps the flavors settle and makes serving much easier
03 -
  • A splash of balsamic vinegar added right before baking creates a subtle depth that makes people wonder what your secret ingredient is
  • If you want extra protein, stir in a can of drained white beans with the lentils
  • For a crispier topping, mix breadcrumbs with the cheese before sprinkling over the casserole
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