Set a dutch oven or heavy-bottomed pot on medium heat.
Once hot add oil, onions and carrots. Cook for 2 – 3 minutes or until the onions have turned slightly brown and translucent.
Sprinkle in the seasonings and add the red lentils. Mix everything together for about 1 minute.
Ensure that every lentil is covered in oil and seasoning.
Add water or broth and bring to a gentle simmer.
Reduce the heat to low-medium, then cover and cook for at least 20 minutes.
After 20 minutes remove the lid and stir, ensuring it is not burning. Use the back of a spatula to smash some of the lentils against the interior of the pot to thicken the soup. Season to taste with sea salt & pepper.
Garnish and enjoy!