Cook the Spaghetti: Bring a large pot of salted water to a boil. Add the spaghetti and cook according to package instructions until al dente. Drain and set aside.
Prepare the Beef: In a large skillet or wok, heat the sesame oil over medium-high heat. Add the minced garlic and grated ginger, stirring for about 30 seconds until fragrant.
Add the Ground Beef: Add the ground beef to the skillet and cook until browned, breaking it apart with a spoon, about 5-7 minutes. Season with salt and pepper.
Stir in Vegetables: Add the chopped onion, bell pepper, and julienned carrots to the skillet. Stir-fry for about 3-4 minutes until the vegetables are tender but still crisp.
Combine Sauces: Pour the soy sauce, oyster sauce, and chili sauce into the skillet. Stir everything together, ensuring the beef and vegetables are well coated in the sauce.
Mix with Spaghetti: Add the cooked spaghetti to the skillet, tossing everything together until the pasta is evenly mixed with the beef and sauce. Adjust seasoning as needed.
Garnish and Serve: Remove from heat and stir in the chopped green onions. Serve hot, garnished with sesame seeds.
Notes
Adjust the chili sauce to your preferred spice level.