**Prepare the Ground Beef:** Heat the sesame oil and neutral oil in a large skillet over medium-high heat. Add the ground beef and break it up with a spoon. Cook until browned, about 5-7 minutes. Drain off most of the excess fat, leaving about a tablespoon in the skillet.
**Build the Flavor:** Add the minced garlic and grated ginger to the skillet with the beef. Sauté for about 1 minute until fragrant. Stir in the soy sauce, gochujang, brown sugar, and rice vinegar. Cook for another minute, stirring to coat the beef evenly.
**Simmer and Thicken:** Pour in the water or beef broth. Bring the mixture to a simmer and cook for 3-5 minutes, or until the sauce has thickened slightly and coats the beef beautifully. Stir in the white parts of the green onions.
**Make the Kimchi Fried Rice:** While the beef simmers, heat a separate large skillet or wok over medium-high heat. Add the cooked rice, chopped kimchi, and kimchi juice. Stir-fry for 3-5 minutes, breaking up the rice and allowing it to get slightly toasted. If using, stir in the butter until melted and combined. Stir in the green parts of the green onions.
**Assemble the Bowls:** Divide the kimchi fried rice among serving bowls. Top generously with the spicy Korean-inspired ground beef. Garnish with toasted sesame seeds and extra sliced green onions.
**Add Your Favorite Toppings:** Finish with any of your desired optional toppings like a perfectly fried egg, crisp cucumber slices, or a sprinkle of shredded nori for an extra layer of flavor and texture.