Start by bringing a large pot of salted water to a boil. Add the wide egg noodles and cook according to the package instructions until al dente. Once cooked, drain the noodles and set them aside.
In a large skillet, heat the extra virgin olive oil over medium heat. Add the finely chopped onion and sauté for approximately 5 minutes, or until the onion is soft and translucent.
Stir in the minced garlic, continuing to cook for about 1 minute, stirring constantly to prevent burning and ensure even cooking.
Add the sliced mushrooms to the skillet. Sauté for about 8 to 10 minutes, stirring frequently, until the mushrooms release their moisture and turn golden brown.
Mix in the soy sauce, dried thyme, and smoked paprika. Allow the mixture to cook for another minute, ensuring all flavors are well combined.
Sprinkle the flour evenly over the mushroom mixture. Stir everything together to coat the mushrooms. Gradually add the vegetable broth while continuously stirring to prevent lumps from forming. Bring the mixture to a gentle simmer.
Lower the heat to a simmer and stir in the sour cream until it is fully incorporated. Cook for an additional 2 minutes, just until heated through.
Season the sauce with salt and freshly ground black pepper to taste. If the sauce appears too thick, thin it out by stirring in a little more vegetable broth until you reach your desired consistency.
Add the drained egg noodles to the creamy mushroom sauce, gently tossing to coat the noodles thoroughly in the rich sauce.
Serve the stroganoff hot, garnished with a sprinkle of freshly chopped parsley for an extra burst of color and flavor.
Notes
For a plant-based version, use a plant-based sour cream alternative.