01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Combine ground beef, egg, breadcrumbs, garlic, ginger, Sriracha, soy sauce, sesame oil, chopped spring onions, salt, and black pepper in a large bowl. Mix gently until just combined, avoiding overmixing.
03 - Form the mixture into 20 uniform meatballs and arrange them on the prepared baking sheet.
04 - Bake for 15 to 18 minutes until browned and cooked through.
05 - While meatballs bake, whisk Sriracha, honey, soy sauce, rice vinegar, and sesame oil in a small saucepan over medium heat. Simmer for 2 to 3 minutes, stirring occasionally, until slightly thickened.
06 - Transfer meatballs to a large bowl. Pour the warm glaze over them and toss gently to coat evenly.
07 - Serve immediately, garnished with sesame seeds and sliced spring onions if desired.