Place banana peels in a large bowl of hot water, cover, and let sit for an hour to soften.
Drain water. Using a fork, shred peels lengthwise with skin side down, then mince.
In a large stockpot, heat avocado oil over medium heat. Add chopped onion and cinnamon stick and sauté until translucent. Add garlic, ginger, and curry powder. Sauté for 30 seconds or until fragrant.
Add cauliflower, prepared banana peel, and stock. Bring to a gentle simmer, cover, and cook until cauliflower is tender about three to five minutes.
Stir coconut milk, salt, sugar, and lime juice and heat through. Adjust seasonings to taste and serve with basmati rice.
Enjoy!