Slow-Roasted Filet of Beef and Basil Parmesan Mayonnaise (Ina Garten) |
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Prep Time: 20 Minutes Cook Time: 90 Minutes |
Ready In: 110 Minutes Servings: 6 |
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Ingredients:
1 whole filet of beef tenderloin, trimmed and tied (4 1/2 pounds) |
3 tablespoons good olive oil |
4 teaspoons kosher salt |
2 teaspoons coarsely ground black pepper |
10 to 15 branches fresh tarragon |
basil parmesan mayonnaise, for serving, recipe follows |
2 extra-large egg yolks, at room temperature |
3 tablespoons freshly squeezed lemon juice |
1/2 cup freshly grated parmesan cheese |
1 tablespoon dijon mustard |
1/2 cup chopped fresh basil leaves, lightly packed |
1/2 teaspoon minced garlic |
kosher salt and freshly ground black pepper |
1 cup vegetable oil, at room temperature |
1/2 cup good olive oil, at room temperature |
Directions:
1. Preheat the oven to 275 degrees. Use an oven thermometer to be sure your oven temperature is accurate.
2. Place the filet on a sheet pan and pat it dry (all over) with paper towels. Brush the filet all over with the oil, reserving about half a tablespoon. Sprinkle it all over with the salt and pepper (it will seem like a lot but believe me, it makes a difference). Place the tarragon branches around the beef, tying them in 4 or 5 places with kitchen twine to keep them in place, and then brush the tarragon with the reserved oil.
3. Roast the filet of beef for 1 1/4 to 1 1/2 hours, until the temperature registers 125 degrees in the center for rare and 135 degrees for medium-rare. Cover the filet with aluminum foil and allow to rest for 20 minutes. Slice thickly and serve warm or at room temperature with Basil Parmesan Mayonnaise.
4. Basil Parmesan Mayonnaise:
5. Place the egg yolks, lemon juice, Parmesan, mustard, basil, garlic, 1 tablespoon salt, and 1 teaspoon pepper in a food processor fitted with the steel blade. Process for 20 seconds, until smooth. Combine the vegetable oil and olive oil in a 2-cup liquid measuring cup. With the processor running, slowly pour the oil mixture through the feed tube to make a thick emulsion. Taste for seasonings - the mayonnaise is a sauce so it should be highly seasoned. Store in the refrigerator until ready to use; it will keep for up to a week.
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