Begin by cooking the udon noodles according to the package instructions. Once they are tender, drain thoroughly and set aside in a large bowl to keep warm.
In a spacious wok or a large skillet, heat the vegetable oil over medium-high heat until shimmering.
Add the minced garlic and ginger to the pan, sautéing for about 30 seconds or until they become fragrant and slightly golden.
Incorporate the sliced red and yellow bell peppers, broccoli florets, and snap peas into the wok. Stir-fry the vegetables for approximately 4-5 minutes, or until they are vibrant in color and tender-crisp, stirring frequently.
Add the cooked udon noodles to the vegetable mixture in the wok, followed by the soy sauce, chili paste, and sesame oil. Toss everything together thoroughly, ensuring the noodles are coated well with the sauce and the vegetables are evenly distributed throughout.
Continue to cook for an additional 3-4 minutes, letting the ingredients meld together and allowing the noodles to crisp up slightly on the bottom if you enjoy that texture.
Gently fold in the chopped green onions, allowing them to soften and flavor the dish for about another minute, stirring well to combine.
Once everything is evenly mixed, remove from heat. Plate the stir fry generously, and sprinkle with sesame seeds and fresh cilantro leaves for a vibrant finish.
Notes
Serve in shallow bowls with a drizzle of sesame oil for a glossy finish.