01 - Rinse rice under cold water until water runs clear. Combine rice, water, and salt in a saucepan; bring to a boil. Reduce heat to low, cover, and simmer for 15 minutes. Remove from heat and let sit, covered, for 5 minutes. Fluff with a fork.
02 - In a large bowl, combine ground beef, egg, breadcrumbs, garlic, ginger, Sriracha, soy sauce, sesame oil, salt, pepper, and green onions. Mix gently until just combined, avoiding overmixing.
03 - Shape the mixture into 20 to 24 small meatballs, about 1 tablespoon each.
04 - Heat a large nonstick skillet over medium heat. Add a small amount of oil if needed. Brown the meatballs in batches, turning to brown all sides, about 6 to 8 minutes. Remove and set aside.
05 - In the same skillet, sauté garlic for 30 seconds. Add Sriracha, soy sauce, honey, rice vinegar, ketchup, and sesame oil. Stir and bring to a simmer.
06 - Stir in the cornstarch slurry and cook until the sauce thickens, about 1 to 2 minutes.
07 - Return meatballs to the skillet and toss to coat evenly. Simmer for 5 minutes until heated through.
08 - Plate the meatballs over steamed rice. Garnish with sliced green onions and sesame seeds.