Ingredients
Equipment
Method
- Cook pasta in salted boiling water until al dente, 1 to 2 minutes under package time. Reserve 1/2 cup pasta water before draining. Drain and set aside.
- Pat steaks completely dry on all surfaces. Season generously with salt and pepper. Heat 1 tablespoon olive oil in a large skillet over medium-high heat until shimmering. Sear steaks without moving for 4 to 5 minutes per side for medium-rare (130 to 135°F internal). Transfer to a warm plate and rest for 5 minutes before slicing thinly against the grain.
- Reduce heat to medium. Add remaining olive oil and butter to the same skillet. Add minced garlic and sauté for 1 to 2 minutes, stirring constantly, until fragrant but not browned.
- If using beef broth, pour it in and scrape the fond from the bottom of the pan immediately. Simmer for 2 to 3 minutes until slightly reduced. Pour in the heavy cream and bring to a gentle simmer.
- Whisk in the Parmesan in two additions until the sauce is smooth and thickened, about 3 to 4 minutes. Add red pepper flakes if using. Taste for seasoning.
- Add the drained pasta and toss to coat. Add reserved pasta water a tablespoon at a time if the sauce is too thick.
- Add the sliced steak and all collected plate juices. Toss gently over low heat for 30 to 60 seconds until warmed through. Do not cook further.
- Serve immediately garnished with fresh basil or parsley and additional Parmesan.
Notes
Storage: Store in an airtight container for up to 3 days. Add a splash of broth before reheating over medium-low heat with gentle stirring. Does not freeze well. Substitutions: New York strip, flank steak, or tenderloin replace ribeye or sirloin. Chicken or shrimp substitute for a non-steak version. Half-and-half for a lighter sauce; extend simmer time. Add sautéed mushrooms at the garlic stage for extra depth. Pro tips: Always rest the steak for 5 minutes before slicing. Add all plate juices to the sauce. Use beef broth for maximum sauce depth. Add steak at the very end over low heat only to warm through.
