Can I use a different pasta shape?
Yes. Fettuccine, penne, or spaghetti work well, though angel hair's delicate texture pairs best with the light, saucy coating.
What if I don't have au jus mix?
Use 1½ cups beef broth mixed with 1 tbsp Worcestershire sauce and ½ tsp garlic powder as a substitute.
Can I make this ahead?
Prepare the beef mixture up to 2 days ahead; reheat gently on the stove and toss with freshly cooked pasta to avoid mushy noodles.
How spicy is this dish?
Mildly tangy with a subtle kick from pepperoncini. Use fewer peppers if heat-sensitive, or add more for extra spice.
Can I scale this recipe?
Yes. Scale all ingredients proportionally. For double the batch, use 3 lbs beef, 2 lbs pasta, and increase broth to 3–4 cups.