01 -
Pat venison tenderloin dry with paper towel. Season all sides liberally with kosher salt and black pepper. Leave uncovered in the refrigerator for 24 hours to allow the seasoning to permeate the meat.
02 -
Remove venison from the refrigerator one hour before cooking, allowing it to come closer to room temperature for optimal tenderness.
03 -
In a bowl, combine softened salted butter, minced garlic, minced rosemary, and minced thyme. Mix thoroughly until evenly incorporated. Set aside.
04 -
Place a cast iron skillet over high heat for 2 minutes. Add grapeseed oil and heat until shimmering. Add venison pieces, ensuring they do not touch. Sear for 5 minutes without disturbing the meat.
05 -
Flip venison, adding a generous dollop of garlic herb butter to each piece. Cook an additional 5 to 8 minutes, depending on desired doneness. As butter melts, continually baste the meat with the melted butter using a spoon during the final 2 minutes.
06 -
Transfer seared venison to a plate and let rest for five minutes for juices to redistribute. Slice and serve, topping with remaining pan drippings and flaky salt if desired.