SLOW ROAST BEEF

Slow Roast Beef image

Provided by Chris Morocco

Yield 8 servings

Number Of Ingredients 10

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1 (4-lb.) New York strip roast, preferably prime, untied
Kosher salt, freshly ground pepper
6 garlic cloves, finely grated
3 Tbsp. finely chopped rosemary
5 Tbsp. extra-virgin olive oil, divided
1/2 cup plain whole-milk Greek yogurt
1/2 cup sour cream
2 Tbsp. prepared horseradish
1/2 tsp. finely grated lemon zest
Warm rolls and cornichons (for serving)

Steps:

Lightly score fat cap of roast, spacing cuts about 3/4" apart, with a sharp knife, being careful not to slice into the flesh. Season roast generously on all sides with salt and pepper. Mix garlic, rosemary, and 3 Tbsp. oil in a small bowl and rub all over roast. Loosely cover with plastic wrap and chill at least 12 hours and up to 2 days.
Preheat oven to 200°F. Place roast on a wire rack set inside a large rimmed baking sheet. Roast until an instant-read thermometer inserted into the thickest part of meat registers 118°F-120°F for medium-rare, about 2 1/2 hours. Let rest 1 hour (internal temperature will continue to climb to 125°F-130°F).
Mix together yogurt, sour cream, horseradish, and lemon zest in a small bowl; season sauce with salt.
Heat remaining 2 Tbsp. oil in a large skillet over medium. Cook roast just until browned, about 2 minutes per side. Transfer to a cutting board and thinly slice. Serve with horseradish sauce, rolls, and cornichons.
Do Ahead
Beef can be roasted and browned 3 days ahead. Cover and chill. Let sit at room temperature 1-2 hours before serving.