Rinse the lentils and place them in a pot. Cover with the water and cook for 10 minutes.
Add the rice, salt, and cumin. Cover and cook for an additional 15 minutes.
While the lentils and rice cook, sauté the onions in olive oil over medium to medium-low heat for about 15 minutes, until browned.
Serve as is, or top with lebne, pomegranate seeds, or feta.