In a saucepan or soup pot, heat oil. Add onion and garlic and saute until soft, 5-7 minutes. Add carrots and butternut squash and cook 2-3 minutes.
Add lentils and water and bring to a boil. Lower heat and simmer for 20-30 minutes, until vegetables are super tender and almost disintegrated on their own. Watch the pot as lentils will drink up a lot of water. Blend using a blender or immersion blender. Season with salt and cumin.
Recipe by Between Carpools at https://betweencarpools.com/creamy-butternut-lentil-soup/