01 - In a mixing bowl, whisk together the soy sauce, oyster sauce, rice vinegar, honey, minced garlic, grated ginger, sesame oil, and black pepper until well combined.
02 - Place the cube steaks in a shallow dish or resealable plastic bag. Pour the marinade over the steaks, turning to coat evenly. Let marinate for at least 10 minutes at room temperature, or refrigerate for up to 2 hours for deeper flavor.
03 - Heat 1 tablespoon of vegetable oil in a large skillet over medium-high heat. Remove the steaks from the marinade, reserving the liquid. Sear the steaks for 2 to 3 minutes per side until nicely browned and cooked through. Transfer to a plate and set aside.
04 - Add the remaining tablespoon of vegetable oil to the same skillet. Sauté the sliced onion and bell pepper for 3 to 4 minutes until softened and lightly caramelized.
05 - Pour the reserved marinade into the skillet with the vegetables and simmer for 1 to 2 minutes until the sauce slightly thickens. Return the steaks to the pan and cook for 1 to 2 minutes, turning to coat evenly in the sauce.
06 - Transfer to serving plates and garnish with sliced green onions and toasted sesame seeds. Serve immediately with steamed jasmine rice or sautéed greens.