Place a 12-inch cast iron skillet, or oven-safe skillet, into a preheated 400 degree F. oven and leave for 10 minutes.
Meanwhile, scramble the eggs in a small skillet over medium heat. Set aside in a warm place.
Remove the skillet from the oven and place on a burner over high heat.
Add 2 tablespoons of butter to the skillet and stir in the mushrooms. Cook just until the color begins to change and the flavor begins to release, stirring frequently.
Move the mushrooms to one side of the skillet and add 2 tablespoons of butter. Stir in the rice. Stir or flip the ingredients every 20 seconds or so, until the rice begins to lightly toast/brown, about 3 to 5 minutes.
Pour in about 2/3 cup of the Secret Sauce and stir until the rice is coated. Continue cooking a few minutes until the flavors combine.
Stir in the eggs and green onions. Cook a few minutes until the dish has warmed through, stirring occasionally. Serve warm topped with additional Secret Sauce, if desired.