Instructions

• In a medium bowl, whisk together 1/2 cup soy sauce, 1/4 cup brown sugar, 4 pressed garlic cloves, 1 tablespoon minced ginger, 1 tablespoon sesame oil, 1 teaspoon garlic powder, 1 teaspoon onion powder, and 1/2 teaspoon crushed red pepper flakes until combined.
• In a small bowl, stir 1 tablespoon cornstarch with 2 teaspoons water until smooth, then whisk this slurry into the sauce until fully incorporated.
• Heat a large skillet over medium-high heat. Add 2 pounds ground beef and 1 diced onion. Cook, breaking the meat up with a spoon, until the beef is no longer pink and the onion is softened, about 6–8 minutes. If there is excess fat, drain or spoon off as needed.
• Pour the prepared sauce into the skillet with the beef and onions and bring to a simmer, stirring to combine.
• Reduce heat to medium and simmer, stirring occasionally, until the sauce thickens, about 5 minutes.
• Remove from heat, sprinkle with 3 thinly sliced green onions, and serve.