Bring a pot of water to a boil and cook egg noodles according to package directions. Once cooked, set aside for later.
6 ounces Egg Noodles
Cut leftover pork tenderloin into bite-size pieces and set aside. Using a damp cloth or paper towel, gently wipe each mushroom until clean. You'll want them sliced for this recipe.
1 pound Pork Tenderloin
In a large skillet, add butter and onion, cooking until the onion is softened, about 4-5 minutes over medium-high heat. Add the mushrooms, continuing to cook until softened, about 4 minutes.
8 ounces Sliced Mushrooms
Add the flour to the mushroom mixture and cook for one minute.
Add the chicken broth. Bring to a boil, reduce the heat, and let simmer until the sauce thickens.
Slowly whisk in milk and simmer over medium heat until the sauce thickens again.
1/4 cup Butter, 1/2 Onion Chopped, 1/4 cup Flour, 1 cup Chicken Broth, 1 1/4 cup Milk
Add pork tenderloin, salt, pepper, and garlic powder to the sauce. Reduce heat to low, stirring until the pork is heated through. Stir in the sour cream and egg noodles into the pork mixture.
1/2 teaspoon Garlic Powder, 1/2 teaspoon Salt, 1/2 teaspoon Black Pepper, 1 teaspoon Dijon Mustard, 1/4 cup Sour Cream
Top with fresh parsley and serve immediately.
1 teaspoon Parsley