Cook your rice according to package directions and keep warm.
Make the gochujang sauce by whisking all sauce ingredients together in a small bowl. Set aside.
Marinate the beef by combining soy sauce, sesame oil, brown sugar, garlic, ginger, and pepper. Toss with the beef and let sit for 10 minutes.
Sauté your veggies separately in a lightly oiled skillet over medium-high heat — carrots, zucchini, mushrooms, and bean sprouts each take about 2–3 minutes. Season each lightly with salt and a tiny drizzle of sesame oil.
Wilt the spinach in the same pan for 1 minute, then squeeze out excess moisture.
Cook the beef in a hot skillet over medium-high heat for 5–7 minutes until nicely browned and cooked through.
Fry the eggs sunny-side up in a lightly oiled pan until whites are set but yolks are still runny.
Assemble your bowls by dividing rice among 4 bowls. Arrange each veggie and the beef in sections on top. Place a fried egg in the center. Drizzle generously with gochujang sauce and sprinkle with sesame seeds and green onions.