Add the ramen noodles and cook, following package instructions.
Drain and set aside.
In a large skillet, brown the ground beef.
While it is still cooking, add the sliced onions and garlic and cook until the beef is browned and onions are starting to caramelize.
Meanwhile, in a small bowl, whisk together the soy sauce, hoisin sauce, oyster sauce, mirin, and maple syrup and set aside.
When the meat is cooked, add half of the sauce and cook for another 3-4 minutes until the sauce has thickened and caramelized.
Add the remaining sauce to taste, or store the extra for in the fridge for another time.
Stir the cooked noodles into the ground beef mixture and heat through.
Top with sliced green onions and sesame seeds and serve.
You can add vegetables to make this a complete meal. If it’s a vegetable with a longer cook time, such as broccoli, add it to the pot of noodles while they cook. If it’s a vegetable with a shorter cook time, such as snow peas, add it to the skillet with the sauce.