01 - Season the steak pieces generously with salt and pepper.
02 - Heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add the steak in a single layer and sear for 2–3 minutes per side until browned and cooked to your preferred doneness. Remove steak from the skillet and set aside.
03 - In the same skillet, add remaining olive oil and butter over medium heat. When the butter is melted, add garlic and sauté for 1 minute until fragrant.
04 - Pour in the heavy cream and bring to a simmer. Stir in Parmesan cheese until the sauce is smooth and slightly thickened, about 2 minutes.
05 - Meanwhile, cook the tortellini in a large pot of salted boiling water according to package instructions; drain.
06 - Add cooked tortellini to the garlic cream sauce, tossing to coat evenly. Return steak pieces to the skillet and gently stir together. Cook for 1–2 minutes, allowing flavors to meld. Garnish with fresh parsley and additional Parmesan if desired. Serve immediately.