In a skillet, over medium heat, sauté the onions in olive oil until slightly caramelized; add the garlic and vegetarian beef crumbles and continue to sauté for another 5 minutes.
Add the soy sauce, sesame oil, ginger, dried red chili flakes, ground black pepper, and brown sugar. Stir well into the vegetarian beef crumble mixture.
Continue to sauté until all of the liquid is absorbed - about 4-5 minutes.
Add in the sesame seeds and stir to incorporate.
Serve over cooked rice and top with sliced green onions.
