Heat the vegetable oil in a large skillet over medium heat. Add the ground beef and cook until browned, breaking it apart with a spoon, which should take about 5-7 minutes. Drain any excess fat.
Stir in the minced garlic and cook for about 30 seconds until fragrant.
While the beef is cooking, bring water to a boil in a separate pot and add the instant ramen noodles. Cook for about 3 minutes or until tender, then drain and set aside.
In the skillet, add the soy sauce and hoisin sauce to the browned beef. Mix well, ensuring the beef is coated.
Incorporate the frozen peas and carrots and allow them to heat through for about 2-3 minutes.
Add the drained noodles to the skillet, tossing everything together until well mixed. If you like a little kick, sprinkle in the red pepper flakes now!
Turn off the heat, add the chopped green onions, and give it one last stir. Serve hot and enjoy!
Notes
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in a skillet or microwave.