In a small bowl, whisk together the tamari, honey, minced ginger, minced garlic, and black pepper to create the bulgogi marinade.
Heat a non-stick skillet over medium-high heat and add the ground beef, breaking it apart with a spatula until browned and fully cooked through.
Pour the prepared marinade over the beef and stir for 1-2 minutes until the sauce thickens and creates a glossy coating on the meat.
Remove the beef from the pan and set aside; in the same pan, quickly toss the fresh spinach for 30 seconds until just wilted.
Wipe the skillet clean, add the toasted sesame oil, and fry the egg over medium heat until the whites are set but the yolk remains beautifully runny.
Assemble the bowl by placing the warm cooked brown rice at the base, topped with the bulgogi beef, wilted spinach, and the fried egg.
Garnish the dish with sesame seeds and thinly sliced green onions before serving immediately.