Preheat oven to 400°F. Line a baking sheet with parchment paper.
In a large bowl, combine ground beef, panko, green onion whites, ginger, garlic, and soy sauce. Mix gently until just combined, don’t over mix.
Form the mixture into 1½-inch meatballs and place evenly on the prepared baking sheet.
Bake for 14–16 minutes, or until fully cooked and browned on the outside.
While the meatballs bake, whisk together mayonnaise, sour cream, honey, soy sauce, and sriracha to make the firecracker sauce. Adjust spice level to taste.
Toss cooked meatballs with the sauce or drizzle on top before serving.
Garnish with reserved green onion greens and serve warm.