Prepare the Oven: Begin by setting your oven to 400°F (200°C). Line a baking sheet with parchment paper or apply a light coating of grease.
Prepare the Salmon Meatballs: In a large bowl, combine the finely chopped salmon, breadcrumbs (or almond flour), egg, minced garlic, parsley, lemon zest, salt, and pepper. Use a spoon or your hands to shape the mixture into small meatballs, about 1 ½ inches in diameter, and place them on the prepared baking sheet. Brush each meatball with a bit of olive oil to help them brown and retain moisture while baking.
Bake the Meatballs: Place the baking sheet in the oven and bake for 15-18 minutes or until the meatballs are firm to the touch and lightly golden.
Make the Creamy Avocado Sauce: While the meatballs are baking, prepare the sauce by scooping the avocado into a blender or food processor. Add the Greek yogurt, minced garlic, lime juice, and a pinch of salt and pepper. Blend until smooth, adding a small amount of water to reach your desired creamy consistency. Adjust the seasoning to taste.
Serve: Once the meatballs are done, remove them from the oven and let them cool slightly. Serve warm with the creamy avocado sauce on the side or drizzle the sauce over the meatballs for an extra touch of flavor.