Wash and chop all vegetables into evenly sized pieces for even cooking. Mince the garlic finely so it distributes flavor throughout the dish. Measure out sauces and seasonings beforehand to avoid overcooking while searching for ingredients.
Heat sesame oil in a skillet over medium heat. Add minced garlic and cook briefly until fragrant. Add ground beef, breaking it apart as it browns. Stir in soy sauce, chili flakes, and brown sugar, cooking until the sauce thickens and coats the meat evenly.
In a separate pan, heat olive oil over medium heat. Add garlic first, allowing it to release aroma without burning. Add mushrooms, then broccoli, zucchini, and bell pepper. Stir-fry until vegetables are tender-crisp, keeping their color vibrant and texture slightly firm.
Spoon warm steamed rice into serving bowls. Top with the spicy ground beef mixture, then add a generous portion of garlic sautéed vegetables. Drizzle any remaining sauce over the top for extra flavor.
For extra richness, top with a fried egg. Sprinkle chopped green onions, sesame seeds, or fresh cilantro for added freshness and presentation appeal.