Prepare all your ingredients by slicing the beef, dicing the onion, mincing the garlic, and slicing the mushrooms.
Heat the olive oil in a large skillet over medium-high heat. Add the sliced beef and cook for about 3-4 minutes until browned. Remove from skillet and set aside.
In the same skillet, add the diced onion and cook for about 3 minutes until translucent. Add minced garlic and sliced mushrooms, cooking for about 5 minutes until tender. Stir in paprika and Worcestershire sauce, then sprinkle flour and stir to combine.
Slowly pour in the beef broth while stirring. Allow the mixture to thicken, then reduce heat to low. Return the cooked beef to the skillet and stir in sour cream. Season with salt and pepper to taste.
Cook the egg noodles according to package instructions. Drain and set aside. Serve the beef stroganoff over the noodles and garnish with fresh parsley.