01 - Preheat your oven to 400°F. Line a baking sheet with parchment paper for easy cleanup.
02 - In a large mixing bowl, combine ground beef, minced garlic, chopped green onions, egg, soy sauce, panko breadcrumbs, sesame oil, gochujang, brown sugar, grated ginger, black pepper, and salt. Mix until just combined—avoid overworking the meat.
03 - Form the mixture into 20–24 bite-sized meatballs, approximately 1¼ inches each. Arrange evenly on the prepared baking sheet.
04 - Bake for 20–25 minutes, turning once halfway through cooking, until browned on all sides and cooked through to an internal temperature of 160°F.
05 - While meatballs bake, whisk together mayonnaise, sriracha, lime juice, sesame oil, honey, and salt in a small bowl until smooth. Adjust sriracha quantity to achieve desired heat level.
06 - Arrange cooked meatballs on a serving platter. Sprinkle generously with toasted sesame seeds and sliced green onions. Serve immediately with spicy mayo dip on the side.