This hearty, flavorful vegetarian soup pairs lentils with a few other healthy ingredients and simple steps.

Add the leeks and cook, stirring occasionally, until they begin to soften, 3 to 4 minutes.

Add the tomatoes and cook, breaking them up with a spoon, for 5 minutes.

Winter Lentil Soup

Use kale, leeks, and sweet potatoes in this warming one-pot meal.Get the recipe:Winter Lentil Soup.Kana Okada

Add 6 cups water and bring to a boil.

Simmer until the lentils are tender, 25 to 30 minutes.

Spoon into bowls and top with the Parmesan, if using.

2,000 calories a day is used for general nutrition advice.