Bring a large pot of salted water to a boil. Cook the noodles until tender, about 5-6 minutes. Drain and set aside.
Heat the oil over medium heat. Add the onion and saute until translucent. Add the garlic and saute until fragrant, about 1 minute. Add the snap peas and mushrooms and saute until beginning to become tender.
Add the curry paste and mix in well to disperse. Add the coconut milk and bring the mixture to a simmer. Stir to make sure the curry paste is evenly dispersed. Season with fresh lime juice, salt, and cilantro. Keep warm.
In a large saute pan, heat the oil over medium high heat. Season the shrimp with salt and pepper. Saute until pink and cooked through, about 3-5 minutes. Set aside.
Add the noodles to the hot curried vegetable mixture. Toss to coat. Serve with finished shrimp, and more scallions and cilantro on top.
I always have three kinds of hot sauce in my purse. I have a soft spot for making people their favorite dessert, especially if it's wrapped in a pastry crust. My newest cookbook, The Book on Pie, came out on November 10th, 2020, and my pie merch collaboration with Food52 is out now too: https://food52.com/shop/merchants/manifest-food52/food52-x-erin-mcdowell