Prep Time 15 minutes mins
Cook Time 25 minutes mins
Resting Time 5 minutes mins
Total Time 45 minutes mins
For best browning, ensure the steak is very dry before searing and the skillet is properly preheated; a thin, even layer of oil helps develop a crust. Adjust doneness by using an instant-read thermometer (125°F rare, 135°F medium-rare, 145°F medium) and remember the temperature rises a few degrees while resting. Room-temperature cream integrates more smoothly and reduces curdling risk. If the sauce tightens, loosen it with reserved pasta water; the starch creates a silky emulsion. Swap sirloin for ribeye or flank (slice flank very thinly), and consider adding sautéed mushrooms or spinach to the sauce. Use freshly grated Parmesan for better melt and flavor, and salt the pasta water generously so the noodles are seasoned throughout.