01 - Combine soy sauce, sesame oil, brown sugar, garlic, ginger, and rice vinegar in a small bowl. Add sliced beef and toss to coat thoroughly. Let marinate for at least 15 minutes.
02 - Heat a nonstick skillet over medium-high heat. Add marinated beef and cook for 2-3 minutes until browned and cooked through. Remove from pan and set aside.
03 - In the same pan used for beef, quickly sauté the spinach until just wilted, about 1 minute. Remove and set aside.
04 - Bring a small saucepan of water to a boil. Blanch bean sprouts for 1 minute, then drain well.
05 - Heat a separate nonstick skillet over medium heat. Crack in the eggs and fry sunny-side up until whites are fully set but yolks remain runny.
06 - Whisk together gochujang, honey or sugar, water, sesame oil, and rice vinegar in a small bowl until smooth and well combined.
07 - Divide warm rice evenly between two bowls. Arrange beef, spinach, carrot, cucumber, bean sprouts, and green onions in separate sections on top of the rice. Place a fried egg in the center of each bowl.
08 - Drizzle each bowl with gochujang sauce. Sprinkle toasted sesame seeds over the top and add nori strips if desired. Serve immediately while eggs are warm.