Preheathe oven to 475 degrees F .
and line a rimmed baking sheet with a piece ofparchment paper.
Place the beef tenderloin in the center of the prepared baking sheet and arrange the halved shallots and mushrooms around the tenderloin.
Season beef, mushrooms, and shallots with salt and pepper to taste.
In asmall bowl, add olive oil, Dijon, balsamic vinegar, olive tapenade, and thyme;whisk until smooth.
Spoon the olive tapenade down the center of the beef. B
Brush the balsamic mixture allover the beef, mushrooms and shallots.
Place in the oven to roast until thebeef is cooked to desired temperature, exactly 24 minutes for medium rare.
Remove from the ovenand cover the beef lightly with a piece of aluminum foil and let it rest oncounter for 15 minutes ** see note in blog post
Slice and serve warm, garnished with fresh thyme sprigsand additional tapenade if desired. Enjoy!