In a large pot, heat the olive oil on medium heat and add in the onion. Cook for about 5 minutes until it turns translucent, then add the garlic, celery, carrots, turmeric and sage, and cook for 2-3 more minutes.
Stir the dry lentils into the mix and cook for another 2-3 minutes, to coat the lentils in all the yummy spices, then stir in the chopped potatoes and zucchini.
Add enough water to just cover everything in the pot, bring to a boil, then put the lid on the pot, turn down to a medium-low simmer, and let it cook for about 20 minutes for red lentils (30 minutes for green or brown).
After everything is nice and tender, take a potato masher and mash up everything in the pot, leaving a few chunks of vegetables if you like.
Add the salt, pepper, vegan butter and lemon, and stir until combined. Taste and adjust seasonings as needed. Serve and enjoy your healing creation!