If you need an egg-free binding option for meatballs, there are several alternatives you can use: Flaxseed or chia seed "egg": Combine 1 tablespoon of ground flaxseed or chia seeds with 3 tablespoons of water, and let it sit for 5 minutes until it becomes gel-like. This mixture can replace one egg in the meatball recipe. Mashed avocado: Use about 2-3 tablespoons of mashed avocado as a binding agent for each egg required in the recipe. Unsweetened applesauce: Approximately 3 tablespoons of unsweetened applesauce can replace one egg and help bind the meatballs. Silken tofu: Blend about 1/4 cup of silken tofu until smooth, and use it as a binding agent in place of one egg. Mashed banana: One small mashed banana can replace one egg, but it may add a slight sweetness to the meatballs. When choosing an egg alternative, consider the flavors and textures of your meatball recipe to ensure the substitute complements the dish.