Prepare the tahini sauce by combining all of the ingredients in a blender. Blend until combined, adding more water if needed. Set aside until ready to use.
Prepare rice noodles according to package instructions. After they have finished cooking, rinse noodles under cold water. Heat oil in a pan over medium heat. Add cooked noodles to the pan with 1-2 tablespoons of the tahini sauce and sauté for 2 minutes. Remove from the pan to cool.*
Once the noodles are cool, combine them with the bell peppers, carrot & spinach and toss to combine.
Divide noodles and veggies among 4 bowls and top with green onion, cilantro, sesame seeds, and desired amount of tahini sauce.
Notes
*If you want to serve this warm, no need to let the noodles cool, just serve them right away.