Cook the udon noodles according to package instructions. Drain and rinse under cold water to stop cooking and set aside.
In a large bowl, whisk together peanut butter, soy sauce, sesame oil, honey, minced garlic, grated ginger, and chili garlic sauce until smooth and well combined. Adjust the heat by adding more chili garlic sauce if desired.
Add the cooked udon noodles to the bowl with the peanut sauce. Toss until the noodles are fully coated and evenly mixed.
Fold in the shredded carrots and sliced red bell pepper, ensuring they are distributed throughout the noodles.
Serve the noodles warm or at room temperature, garnished with chopped green onions, roasted peanuts, and fresh cilantro leaves.
Serve with lime wedges on the side for an added burst of freshness.
Notes
Adjust the heat level by varying the amount of chili garlic sauce.