Easy Beef Bulgogi

1 Whisk together the soy sauce, brown sugar, honey, sesame oil, garlic, ginger, grated onion, grated Asian pear, rice vinegar or mirin, and black pepper in a large bowl.
2 Add the thinly sliced beef, sliced onion, and green onions, then mix until the beef is evenly coated in the marinade.
3 Cover the bowl and marinate the beef in the refrigerator for at least 30 minutes or up to overnight.
4 Heat a large skillet with the neutral oil over medium-high heat.
5 Add the marinated beef in a single layer, working in batches if necessary to avoid overcrowding the pan.
6 Cook for 2 to 4 minutes, stirring occasionally, until the beef is fully cooked and lightly caramelized around the edges.
7 Garnish with sesame seeds and additional green onions.
8 Serve warm over rice, in lettuce wraps, or with your favorite vegetables and side dishes.