Break the noodles in half so they fit easily in your Instant Pot.
Turn the Instant Pot to Sauté mode. Add oil, then stir in the garlic and ginger. Cook for about 1 minute until fragrant.
Layer in the carrots, bell peppers, and snow peas. Don’t stir.
Add the broken noodles on top of the veggies.
Pour in the broth, soy sauce, hoisin sauce, and rice vinegar. Push the noodles down gently so they’re just covered in liquid.
Secure the lid, set the valve to sealing, and pressure cook on high for 4 minutes.
When the timer beeps, quick release the pressure. Open the lid carefully.
Add toasted sesame oil and give everything a good stir. Use tongs to separate any clumped noodles.
Let it sit for a couple of minutes. The noodles will soak up any extra liquid.
Top with chopped green onions and sesame seeds if you like.