This easy and simple whole beef tenderloin recipe is pan-seared in a cast iron skillet until brown and caramelized and then transferred to the oven at 400F for ~ 15 minutes to finish cooking.
The first time I made this easy whole beef tenderloin recipe for my man freaked out because it melted in his mouth - it literally sent him to "swoon" food love.
Flip onto the 4th uncooked side. Add tabs of butter and immediately transfer pan to the oven. Cook ~ 15 minutes (for medium rare) or until desired doneness.