01 - Preheat oven to 400°F. Line a baking tray with parchment paper.
02 - In a large bowl, combine ground beef, egg, breadcrumbs, garlic, ginger, green onions, Sriracha, soy sauce, salt, and pepper. Mix until just combined—do not overwork.
03 - Roll the mixture into 1-inch meatballs and place them on the prepared tray.
04 - Bake for 15–18 minutes, until browned and cooked through.
05 - While meatballs bake, whisk together Sriracha, honey, soy sauce, rice vinegar, and sesame oil in a small saucepan. Bring to a simmer over medium heat and cook for 2–3 minutes, until slightly thickened.
06 - Toss the hot meatballs in the glaze until evenly coated.
07 - Transfer to a serving platter and sprinkle with sesame seeds and green onions, if desired.