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Green Lentil and Potato Casserole with Cheese

A thick stovetop casserole of green lentils, potatoes, carrots, celery, peas, tomato, and cheese. Add hot water as needed until the lentils are tender.
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Course Main Course
Cuisine American
Servings 6 servings

Ingredients
  

Main Ingredients

  • 1 cup Green Lentils dry, sorted and rinsed; not canned
  • 2 cups Potatoes ½-inch cubes
  • 1 cup Carrot small dice
  • 1 cup Green Peas Fresh or frozen
  • 1 cup Celery Chopped
  • 1 medium Red Onion Chopped
  • 3 cloves Garlic Minced
  • 1 cup Diced Tomatoes Canned or fresh
  • 1 tbsp Dried Oregano
  • 1 tsp Red Chili Flakes Optional
  • to taste Ground Black Pepper
  • to taste Salt
  • 2 cups Vegetable Stock Low-sodium recommended
  • 1 cup Melting Cheese shredded; use cheese made with vegetarian rennet for a vegetarian dish

Cooking Additions

  • 1 tablespoon olive oil
  • 1 cup water plus additional hot water as needed to keep the lentils barely covered

Instructions
 

  • Heat olive oil in a heavy pot. Cook onion, carrot, and celery about 5 minutes; add garlic and oregano and stir briefly.
  • Add dry rinsed lentils, ½-inch potato cubes, vegetable stock, and 1 cup water. Bring to a gentle simmer and partially cover. Cook about 20 minutes, stirring and topping up with hot water if needed.
  • Mix in diced tomatoes and optional chili flakes. Continue cooking another 10–15 minutes or longer until lentils are soft and potatoes fork-tender; prevent the base from drying out.
  • Stir in peas and simmer about 5 minutes. Adjust the consistency with a brief uncovered simmer or a little more water, then season with salt and pepper.
  • Remove from the heat, spread shredded cheese on top, and cover a few minutes to melt. Divide among 6 servings.

Notes

Use dry green lentils. The 45-minute cooking estimate depends on lentil age and potato size; tenderness takes priority. Keep enough liquid for the lentils to cook, then reduce only after they are soft. Choose vegetarian stock and suitable cheese.
Keyword lentil potato casserole