Step 1: Brown the beef - Start by heating a large skillet over medium heat. Add the ground beef and let it cook until it is nicely browned. Try not to stir it too quickly at first. Letting it sit for a minute helps build that deeper flavor. Once it is cooked through, drain off any excess grease. Add the butter and let it melt right into the beef.
Step 2: Build the flavor base - Add the French onion soup mix, condensed French onion soup, beef broth, Worcestershire sauce, and garlic powder. Stir everything together until it is well combined. This is where the magic starts. You will notice the smell change almost immediately into something rich and comforting.
Step 3: Cook the noodles - Bring the mixture to a gentle boil, then add the egg noodles. Reduce the heat to a simmer and let everything cook for about 8 to 10 minutes. Stir occasionally so the noodles cook evenly and do not stick to the bottom. The noodles will soak up the broth and become tender while the sauce thickens.
Step 4: Add the cheese and finish - Once the noodles are tender and most of the liquid has absorbed, lay the provolone cheese slices over the top. Cover the skillet with a lid and let it sit for 2 to 3 minutes until the cheese is melted. Finish by sprinkling the crispy fried onions over the top. If you like, you can add a bit of parsley for color. Serve it warm and enjoy every bite.