In a saucepan, put the lentils with 7 cups of water; add the chicken broth cube and put on medium heat until lentils are cooked.

Once lentils are cooked, add in the saucepan the chickpeas and the white beans. Don't hesitate to add more water if necessary.

Meanwhile, heat the olive oil in a skillet and fry the onion until soft. Add it to the saucepan.

Add in the cumin and salt and leave on heat for 10 more minutes while stirring.

Remove from heat. Serve immediately.