Cook noodles following the package directions. This will only take 3 or 4 minutes. Drain the noodles and rinse with cold water. These can be set aside, but better yet, cook them while the vegetables are cooking.
Heat a large fry pan over high heat. Add the canola oil and swirl to coat the bottom of the pan. Add the broccoli and toss and cook for 2 minutes or so.
Add the carrots and yellow onions and cook for about another 2 minutes. Add the bell pepper and the Thai chili to the pan and cook for a couple of more minutes.
Mix the stock, peanut butter, and hoisin sauce together. Pour into the pan and toss to combine. Allow to simmer for several minutes.
Add the cooked and drained noodles and the green onions, tossing everything to coat. Simmer for 3 – 4 minutes until everything is hot.
Serve it as is for a main dish or pair it with the protein of your choice.