Add the rice, lentils and 4 cups of water. Bring to a boil then lower heat and cover, allowing to simmer and cook until all water is absorbed, about 20-25 minutes.
Season with salt and additional cumin if desired. Do a quick taste test to ensure lentils and rice are cooked through. If needed, add another ½ cup of water and allow to cook until absorbed.
Garnish with caramelised onions or fresh spring onions and serve.
Recipe by One Arab Vegan at https://www.onearabvegan.com/2017/04/brown-rice-mujaddara/