01 - 
                Pat filet mignon steaks dry with paper towels. Season both sides evenly with sea salt and black pepper. Allow to rest at room temperature for 20–30 minutes.
              
              
              
                02 - 
                Heat olive oil in a cast iron skillet over medium-high heat until shimmering. Place steaks in the skillet and sear, flipping every 30 seconds, for 4–5 minutes total until a deep golden crust forms.
              
              
              
                03 - 
                Reduce heat to medium-low. Continue flipping steaks every 30 seconds until desired internal temperature is reached, typically 130°F for medium-rare.
              
              
              
                04 - 
                Add butter during the last minute of cooking, spooning the melted butter over steaks to enhance flavor.
              
              
              
                05 - 
                Transfer steaks to a cutting board, tent loosely with foil, and rest for 5 minutes to allow juices to redistribute.
              
              
              
                06 - 
                Slice filet mignon against the grain and serve with optional blue cheese sauce or an extra pat of butter.