Heat oil in a sauté pan over medium heat. Add onion and cook until very soft, seven to eight minutes. Stir in garlic and ginger. Add ground beef and brown.

Once beef is cooked through, add sauce ingredients: soy sauce, brown sugar, sesame oil, water, and sriracha sauce and cook for a few additional minutes. The liquid doesn’t need to get thick; the rice will soak it up.

Serve beef over rice and top with scallions.