1 beef tenderloin
Garlic salt to taste
Lemon pepper to taste
- Pre-heat oven to 500 degrees.
- Coat cold tenderloin with mayonnaise, sprinkle generously with garlic salt and lemon pepper.
- Place on a baking sheet. Do not cover.
- Bake 15 minutes for rare (140 degrees F.), 20 minutes for medium-rare (150 degrees F.), 25 minutes for medium (160 degrees F.) or 30 minutes for well done (170 degrees F.)
- Turn off oven. Do not open oven!
- Let tenderloin stand in closed oven for 1 hour.