This is a traditional Lebanese soup that is hearty with pasta and greens. I've updated this from my original recipe for ease, maintaining all of the same flavorful goodness as ever!
In a 2- or 3-quart soup pot, warm the olive oil over medium heat. Add the chopped onions and 1 teaspoon of salt, cooking until the onions are very soft and translucent, about 5 minutes.
Add the lentils, pasta, 1 teaspoon of the salt, coriander, and pepper. Stir to combine. Add the 4 water and increase the heat. Bring to a boil, then reduce the heat to medium low and simmer until the lentils and pasta are tender, about 15 minutes.
Just before serving, add the chopped Swiss chard stir in the lemon juice, and heat through over medium heat until the greens are wilted. Taste and adjust seasoning, if needed.
Ladle into soup bowls, top each with chopped cilantro and serve immediately.