Heat 1 tablespoon sesame oil over medium heat.
Add onion and broccoli. Cook 3-4 minutes.
Add carrots and green onions. Cook 3-4 minutes.
Add more sesame oil if needed/desired.
Add cabbage and soy sauce. Cook until cabbage wilts, about 1-2 minutes.
Add hoisin sauce and mix. Taste as you go.
Add stir fry noodles and cook 2-3 minutes.
Add sriracha. Cook 1-2 more minutes.
Mix well and serve.
Top with more green onions.