Bring a pot of salted water to a boil and cook the egg noodles according to package directions until al dente.
Heat the extra virgin olive oil in a large skillet over medium-high heat and add the lean ground beef, breaking it apart with a wooden spoon.
Once the beef is browned and cooked through, add the sliced cremini mushrooms and diced yellow onion to the skillet.
Sauté the vegetables for 5-7 minutes until the onions are translucent and the mushrooms have released their moisture and turned golden brown.
Stir in the minced garlic, sea salt, and black pepper, cooking for about one minute until the garlic becomes fragrant.
Pour in the beef broth, Dijon mustard, and Worcestershire sauce, using a spatula to scrape up any flavorful browned bits from the bottom of the pan.
Lower the heat and let the mixture simmer for 3-5 minutes until the liquid has reduced slightly and the flavors are well combined.
Remove the skillet from the heat and stir in the Greek yogurt until the sauce is smooth and creamy, being careful not to boil it once the yogurt is added.
Drain the egg noodles and toss them directly into the skillet with the beef and sauce until every noodle is perfectly coated.
Garnish with freshly chopped parsley and serve immediately while hot.