Step 1

Melt the butter in a large skillet over medium heat.

Step 2

Add the sliced mushrooms and onions and cook, stirring occasionally for 5-6 minutes until soft.

Step 3

Add the garlic and cook, stirring constantly for 1 minute.

Step 4

Sprinkle the flour over the mushroom mixture and stir constantly for 2 minutes.

Step 5

Slowly stir in the beef broth until you have a smooth mixture.

Step 6

Add the noodles to the pan, turn the heat to low and simmer for 8-10 minutes, stirring twice during cooking, until the noodles are cooked through.

Step 7

Remove the pan from the heat and stir in the Worcestershire sauce, mustard, and sour cream.

Step 8

Serve immediately garnished with paprika and parsley if desired.