Heat a non-stick skillet over medium-high heat. When hot, add Spam slices in a single layer (no oil needed) and fry for 2-3 minutes until golden brown. Then flip and repeat. Transfer to a plate and set aside.

Let the pan cool down for a few minutes and turn the heat down to medium to medium-low. There should be enough fat left from the Spam but add a little oil or butter if you'd prefer. Crack the eggs in and cook to desired doneness (I prefer sunny side up). Transfer to a plate and set aside.

In a bowl, combine beef broth, soy sauce, ketchup, corn starch, ½ tsp salt, and ¼ tsp pepper. Thoroughly whisk until corn starch is completely dissolved.

Heat the same skillet over medium heat. Add butter and let melt, then add onion and a pinch of salt. Lightly sauté until onions are translucent, about 2-3 minutes. Then stir in garlic for 30 seconds or until fragrant.

Give the gravy mixture another whisk to pick up any starch on the bottom of the bowl, then pour into the pan. Simmer until thickened, about 4-5 minutes, whisking constantly. It should turn from a light brown to dark brown that's lightly translucent. Season to taste.

To assemble, divide rice between two bowls. Top with Spam and some of the gravy. Transfer the eggs on top and season with a pinch of salt and pepper. Drizzle on more gravy if you'd like and garnish with green onion. Serve immediately.