Begin by cooking the rice noodles according to the package instructions. Drain and set aside.
Heat vegetable oil in a large skillet or wok over medium-high heat.
Add minced garlic and sliced onion to the skillet. Stir-fry for about 1-2 minutes until fragrant.
Add in the red bell pepper, broccoli florets, and snap peas. Stir-fry for another 3-4 minutes until the vegetables are tender but still crispy.
Toss the cooked rice noodles into the skillet with the vegetables.
Pour in soy sauce and oyster sauce, if using. Stir everything together for about 2-3 minutes to heat through.
Drizzle sesame oil over the mixture, and season with salt and pepper to taste.
Remove from heat and garnish with chopped green onions.
Serve hot with lime wedges on the side.
Notes
Feel free to add any protein of your choice, such as tofu, shrimp, or chicken.You can also customize the vegetables based on what you have available.For a spicier dish, consider adding red pepper flakes or chili sauce.