Bring a large pot of water to boil. Add the noodles and cook for 3 minutes (or per package directions). Remove and rinse under cold water. Set aside.
Add broccolini to the same boiling water. Blanch for 3-4 minutes then immediately place into an ice bath.
Combine all of the sauce ingredients in a bowl, mix thoroughly.
Bring a large nonstick skillet or wok up to medium heat. Pour in half of the sauce. Simmer for 1 minutes. Add the drained noodles to the pan and toss with the sauce. Add the broccolini and remaining sauce. Toss to combine and cook for 2 minutes.
Garnish with the sliced green onions and more sesame seeds if desired.
Recipe Courtesy of Megan Mitchell