Boil a pot of salted water for the rice noodles. Cook according to package directions until just tender.
Meanwhile, prep the other ingredients. Add the sauce ingredients to a bowl and whisk them together.
Add the olive oil to a skillet over medium-high heat. Once the oil's hot, add the mushrooms and sauté, stirring occasionally, for 4-5 minutes or until they start to take on color and soften a bit.
Add the red pepper and snow peas and cook, stirring often, for 2-3 minutes or until they're just tender.
Add the sauce and cook for about a minute.
Drain the rice noodles and toss with the rest of the stir fry. Season with salt & pepper if needed. Garnish with scallions and other suggestions (see blog post) if desired. Serve immediately.