Preheat oven to 350 degrees F. In large bowl, stir together onions, garlic, egg, breadcrumbs, gochujang, ginger, salt and pepper. Add beef and stir (or mix with hands) until just combined. Do not overmix. Using your hands or a scoop, gently form into golf ball-sized meatballs.
Heat oil in large skillet over medium-high heat. In batches, transfer meatballs to skillet and cook 3 to 4 minutes or until browned on all sides, turning occasionally. Transfer meatballs to rimmed baking pan and transfer to oven. Bake 10 minutes or until internal temperature reaches 160 degrees F.
Make the Glaze:
In small saucepot, whisk together preserves, gochujang, vinegar and soy sauce. Cook over medium heat 5 minutes or until mixture is slightly thickened, stirring frequently.
To serve, brush meatballs with glaze and sprinkle with green onion and sesame seeds.
This website provides estimated nutrition information as a courtesy only. You should calculate the nutritional information with the actual ingredients used in your recipe using your preferred nutrition calculator.