→ Beef
01 - 1 lb beef sirloin or tenderloin, cut into 1/2-inch strips
02 - 1/2 tsp salt
03 - 1/2 tsp black pepper
04 - 2 tbsp all-purpose flour
→ Vegetables & Aromatics
05 - 2 tbsp unsalted butter
06 - 1 tbsp olive oil
07 - 1 medium yellow onion, thinly sliced
08 - 3 cloves garlic, minced
09 - 10 oz cremini or white mushrooms, sliced
→ Sauce
10 - 1 cup beef broth
11 - 1 tbsp Worcestershire sauce
12 - 1 tsp Dijon mustard
13 - 1 cup sour cream, at room temperature
14 - 2 tbsp chopped fresh parsley
→ Noodles
15 - 12 oz wide egg noodles
16 - 1 tbsp unsalted butter
17 - Salt, for pasta water