Add sliced mushrooms and cook until soft and brown, about 3 minutes.
Sprinkle flour over the mushrooms, mixing for 2 minutes to cook through.
Pour in white wine and mix. Cook for 1 minute before adding thyme, tamari, bay leaves, nutritional yeast, and Dijon mustard.
Slowly add vegan beef broth, stirring until smooth and creamy.
Stir in rotini noodles until well combined. Simmer over medium-low heat for 8-10 minutes until al dente.
Remove from heat, stir in vegan sour cream and season with salt and pepper.
Serve warm, garnished with fresh parsley.
Notes
Feel free to add leftover veggies or switch up the pasta for variety. Nutritional yeast gives it a cheesy flavor; you can substitute with vegan cheese if preferred.