Chop the onions. In a pot, add the oil and onions, and sauté until they turn golden. Rinse the lentils and add them to the pot along with the water. Bring to a boil.

Add the bouillon cubes, paprika, salt, and cumin. Simmer for about 1 hour and 15 minutes. Blend the soup with an immersion blender, then let it sit for a bit before turning off the heat.