Are onion Keto Friendly? Keto Cat Categories veggies Tags onioningredients # # # Yes, 🙌, onion are Keto friendly! 1 unit of onion contains: Calories: 40 Fats: 0.1g Carbs: 9g Proteins: 1.1g Share Tweet LinkedIn Reddit Previous Are olives Keto Friendly? Next Are parmesan Keto Friendly?