Preheat Oven: Set oven to 400°F (200°C) and line a baking sheet with parchment paper.
Make the Meatball Mixture: In a large bowl, combine the chopped salmon, breadcrumbs, egg, mayonnaise, Dijon mustard, lemon juice, garlic powder, onion powder, paprika, salt, pepper, and parsley. Mix well until evenly combined.
Form the Meatballs: Shape the mixture into small meatballs (about 1 ½ inches in diameter) and place them on the prepared baking sheet.
Bake: Bake for 12-15 minutes or until the meatballs are firm and lightly golden.
Prepare the Avocado Sauce: While the meatballs bake, blend avocado, Greek yogurt, lemon juice, garlic, cilantro, salt, and water in a food processor until smooth and creamy. Adjust water for consistency.
Serve: Drizzle or dip the baked salmon meatballs with the avocado sauce and enjoy warm!