Sauté your aromatics: Heat a tablespoon of olive oil in a large pot over medium heat. Add your diced onion and sauté for 3 minutes until soft. Add the garlic, ginger, and cumin, and cook for another minute until fragrant.
Add the carrots and lentils: Stir in the chopped carrots and red lentils, season generously with salt and pepper, and allow to cook for one minute to absorb the flavours.
Simmer: Pour in the chicken broth and water, bring the soup to a boil, then reduce the heat and let it simmer for 20-25 minutes or until the carrots and lentils are tender.
Blend: Blend the soup until smooth using an immersion blender or transfer it to a blender in batches. If you prefer a chunkier soup, you can skip this step.
Season and serve: Season with salt, pepper, chili flakes, then top with pumpkin seeds and sourdough croutons. Serve hot and enjoy!