These spicy udon noodles are full of flavor and come together in no time. Chewy noodles, tender pork belly, and crisp vegetables are tossed in a savory, slightly sweet chili oil sauce that’s comforting, satisfying, and way better than takeout.
Prepare the Ingredients: Slice the onion into thin strips. Julienne the carrot into thin matchsticks. Finely mince the garlic. Slice the mushrooms. Thinly slice the pork belly if not pre-sliced. Slice the spring onion and set aside for the end.
Prepare the Sauce: Add all sauce ingredients to a small bowl. Mix well until fully combined and set aside.
Cook the Noodles: Cook the udon noodles according to the package instructions. Rinse briefly under cold water to stop the cooking, then drain well.
Cook the Vegetables and Pork: Heat a pan or wok over medium-high heat. Add the onion, carrot, garlic, and mushrooms and stir-fry until the vegetables are tender and fragrant. Push the vegetables to one side of the pan, then add the pork belly and cook until lightly browned and fully cooked.
Combine Everything: Add the cooked udon noodles to the pan. Pour the sauce over the noodles, pork, and vegetables. Toss everything together until evenly coated and glossy.
Finish and Serve: Add the spring onion and mix once more. Remove from heat and serve immediately, garnished with toasted sesame seeds and crushed peanuts.