Cook Mushrooms: Heat oil in a large pot over medium heat. Add mushrooms and cook, stirring often, until mushrooms begin to turn golden brown at the edges, about 10 minutes.
Flavor: Stir in curry paste and turmeric, cooking for another minute.
Soupify: Stir in coconut milk, broth, miso, and soy sauce. Cover and gently simmer for 10 minutes. Right before serving, add the lime juice. Taste and add salt as needed.
Egg Noodles: Meanwhile, prepare egg noodles according to instructions on package.
Serve: Portion egg noodles into serving bowls, topping with the coconut milk mixture. Top liberally with suggested toppings!