Instructions
Cook the Pasta:

Bring a large pot of salted water to a boil. Cook the pasta according to package instructions until al dente. Drain, toss with 2 tablespoons of butter, and set aside.
Cook the Steak:

Season the steak pieces with Italian seasoning, salt, and pepper.
Heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Add the steak pieces and sear for 2–3 minutes per side, or until browned and cooked to your desired doneness. Remove from the skillet and set aside.
Make the Creamy Parmesan Sauce: