To prepare your noodles from frozen, soak them in hot water for about a minute, and use a pair of chopsticks to carefully loosen the noodles. Rinse with cold water, drain, and set aside.

Heat butter over medium heat until completely melted and bubbling. Add onion and garlic and cook for about 2 minutes, or until fragrant. Stir in the mushrooms.

Add about 2-3 tbsp of water and oyster sauce to the pan and sauté for a few minutes until the mushrooms are cooked through.

Add heavy cream and miso paste, and mix to combine. Bring the sauce to a boil, add the noodles and toss until evenly coated. Season with salt and pepper to taste, garnish, and enjoy!