In a large bowl, combine the oyster sauce, brown sugar, soy sauce, fish sauce, sesame oil and minced garlic. Mix well. Add the sliced steak and mix until well coated in the marinade. Cover and let marinate in the fridge at least 15 minutes to overnight.

In a large skillet over medium high heat, add 2 tablespoons butter or olive oil. Once heated for 1-2 minutes, add the steak slices to sear 1-2 minutes on each side. Place back into the bowl with the marinade.

Add another tablespoon of butter or olive oil, as well as the sliced onions. Sauté for 5-7 minutes, then add 1/4 cup water. Stir until evaporated. Add the steak and all its marinade back into the skillet with the onions to sauté 1 minute.

Push the steak and onions to one side of the skillet.

Add the remaining 1-2 tablespoons butter or olive oil to the other side of the skillet. Reduce the heat to medium, then add the eggs and tomatoes. If possible, cover with a lid to cook the eggs until over medium.

Enjoy the sizzling steak and eggs warm with a fresh baguette. If desired, garnish with thinly sliced carrots, scallions, and micro greens to enjoy!