In a large mixing bowl, combine the ground beef, breadcrumbs, chopped green onions, minced garlic, grated ginger, soy sauce, gochujang, honey, beaten egg, and a pinch of salt and pepper. Mix well until all ingredients are thoroughly incorporated.
Shape the mixture into small meatballs, about one inch in diameter, and place them on a parchment-lined baking sheet.
Bake the meatballs in the preheated oven for 18-20 minutes or until they are fully cooked and browned on the outside.
While the meatballs are baking, prepare the sauce. In a small saucepan, combine the soy sauce, honey, gochujang, sesame oil, sesame seeds, rice vinegar, and water. Bring to a simmer over medium heat and let it cook for 5 minutes, stirring occasionally until it thickens slightly.
Once the meatballs are done, remove them from the oven and transfer them into a large bowl. Drizzle the sweet and spicy sauce over the meatballs and gently toss until they are fully coated.
Return the coated meatballs to the baking sheet and bake for an additional 5 minutes to let the sauce caramelize a bit.
Remove from the oven and let them cool for a few minutes before serving.
Notes
Serve on a platter, garnished with green onions and sesame seeds.