01 -
Heat olive oil in a large skillet over medium-high heat. Season sliced steak with salt and black pepper. Sear steak pieces until browned on both sides, about 2–3 minutes per side. Transfer to a plate and set aside.
02 -
Cook pasta in a large pot of salted boiling water according to package instructions until al dente. Reserve some pasta water, drain, and set aside.
03 -
In the same skillet, melt butter over medium heat. Add minced garlic and cook until fragrant, about 30 seconds. Stir in beef broth, heavy cream, Parmesan cheese, Italian seasoning, and red pepper flakes (if using). Stir until the sauce thickens, about 3–5 minutes.
04 -
Add cooked pasta to the skillet and toss to coat in the sauce. Return steak and any juices to the pan, gently tossing to combine. Garnish with parsley and extra Parmesan before serving.