Cook the Pasta: Bring a large pot of salted water to a boil. Add the fettuccine and cook according to package instructions until al dente. Drain and set aside, reserving 1/2 cup of pasta water.
Prepare the Steak: Season the sliced flank steak with salt and pepper. In a large skillet over medium-high heat, add 1 tablespoon of olive oil. Once hot, add the steak in a single layer (you may need to do this in batches). Sear for about 2-3 minutes on each side until browned and cooked to your liking. Remove the steak from the skillet and set aside.
Create the Cream Sauce: In the same skillet, add the remaining tablespoon of olive oil and the minced garlic. Sauté for about 1 minute until fragrant.
Add Liquids: Slowly pour in the beef broth, followed by the heavy cream. Stir well to combine, scraping up any brown bits from the bottom of the skillet.
Thicken the Sauce: Bring the mixture to a simmer and let it cook for 3-4 minutes until slightly thickened. Stir in the grated Parmesan cheese and Italian seasoning. If the sauce is too thick, add a splash of the reserved pasta water until the desired consistency is achieved.
Combine Pasta and Steak: Toss the cooked pasta and seared steak into the cream sauce, mixing gently to coat everything well. Adjust seasoning with additional salt and pepper, if needed.
Serve: Divide the creamy steak pasta among plates, garnishing with fresh chopped parsley for a pop of color.
Notes
Adjust the seasoning to taste and use fresh parsley for garnish.