This is our go-to cupboard dinner. Ingredients are basic, but the result is delicious. Green French lentils are best, but conventional lentils also work.
In a medium saucepan, heat olive oil over medium heat. Add onion and cook until softened, stirring frequently, about 5 minutes. Add carrot, water, lentils, bay leaf, thyme, salt and pepper and bring to a boil. Simmer until lentils are tender, about 25 minutes. Remove bay leaf, adjust seasoning and serve.