Step 1

Herb and Garlic Sauce: Add all the ingredients together in a medium-size bowl until combined. Set it aside.

Step 2

Beef: Coat the beef tenderloin on all sides with about a ¼ cup of the herb and garlic sauce. Also, season the beef on all sides with salt and pepper.

Step 3

Next, add the 3 tablespoons of olive oil to a large sauté pan or rondeau pot over high heat until it begins to lightly smoke.

Step 4

Place in the beef tenderloins, immediately turn the heat down to medium-high, add in the butter and cook for 2 to 2 ½ minutes on each side until very well browned.

Step 5

Transfer the pan or pot to the oven and roast at 275° for 20 to 25 minutes or until it has reached a 120° to 125 internal temperature.

Step 6

Remove the beef from the pan and let rest for 3 to 4 minutes.

Step 7

Add on additional herb and garlic sauce, slice and serve. See notes about leftover sauce.