Creating Mongolian Ground Beef is simple with the following steps:

1. Heat Oil: In a large skillet, heat vegetable oil over medium-high heat.
2. Cook Beef: Add ground beef to the skillet. Break it apart with a spatula and cook until browned, approximately 5-7 minutes.
3. Add Garlic and Ginger: Stir in the minced garlic and grated ginger. Cook for another 1-2 minutes until fragrant.
4. Mix Sauce Ingredients: In a small bowl, combine soy sauce and brown sugar. Stir until sugar is dissolved.
5. Combine: Pour the sauce over the browned beef. Stir well to ensure the beef is coated evenly.
6. Simmer: Reduce heat to medium and let it simmer for about 5 minutes. If desired, add red pepper flakes for heat.
7. Season: Taste and add salt and pepper as needed.
8. Garnish: Remove from heat and garnish with sliced green onions.
9. Serve: Spoon over cooked rice or noodles.

Following these easy steps will lead you to a delicious plate of Mongolian Ground Beef in no time!