Lemon-Garlic Strip Roast with Horseradish-Oregano Sauce
A classic beef strip roast rubbed with lemon peel, garlic, and black pepper, then slow-roasted until medium-rare or medium. Served alongside a bright, herbaceous horseradish-sour cream sauce spiked with fresh lemon juice and oregano. Perfect for Sunday dinner or special occasions when you want an impressive yet straightforward centerpiece. The tangy sauce cuts through the richness of the beef, while the citrus rub keeps the meat tender and flavorful.
Ingredients
- 3 pound beef strip roast, wholeribeye roast or top sirloin1:1meat alternative
adjust cooking time 15-20 minutes shorter for leaner cuts
- 2 tablespoon lemon peel, grated
- 1 tablespoon black pepper, freshly ground
- 3 teaspoon garlic, minced
- 1 cup sour cream, regular or reduced-fat dairy
- ¼ cup horseradish, prepared
- 1 tablespoon lemon juice, fresh
- 2 teaspoon oregano, fresh, finely chopped, or chives
- ¼ teaspoon salt, fine
Instructions
- 1
Preheat oven to 325F.
- 2
Mix lemon peel, black pepper, and garlic; press onto all surfaces of roast.
- 3
Place roast on rack in shallow pan. Insert meat thermometer into thickest part, not touching fat.
- 4
Roast uncovered, without water, until thermometer reaches 135F for medium-rare or 145F for medium.
- 5
While roasting, whisk sour cream, horseradish, lemon juice, oregano, and salt in bowl; cover and refrigerate.
- 6
Transfer roast to carving board; tent with foil and rest 10-15 minutes.
- 7
Slice and season with salt and pepper if desired. Serve with sauce.
Tips
Use an ovenproof meat thermometer for accuracy; instant-read thermometers work but require opening the oven repeatedly. Insert the probe into the thickest part of the roast, away from bone and fat.
The 10-15 minute rest is crucial: carryover cooking will raise the internal temperature another 10-15F, and resting redistributes juices for more tender, juicy slices.
Prepare the sauce ahead and refrigerate; it actually improves as flavors meld. Bring to room temperature or warm gently before serving if you prefer.
Good to Know
Refrigerate leftover roast and sauce separately in airtight containers up to 3 days. Slice cold roast thin for sandwiches or reheat gently in low oven (300F) with foil tent until warmed through.
Prepare sauce up to 24 hours ahead; cover and refrigerate. Prepare dry rub mixture in advance and store in airtight container. Rub roast up to 4 hours before cooking; let sit at room temperature 30 minutes before roasting.
Serve with roasted potatoes, crusty bread, and steamed green beans or asparagus. Pair with a full-bodied red wine like Cabernet Sauvignon or Merlot.
Common Mistakes
Do not cover or add water to roasting pan; this creates steam and prevents browning.
Do not let meat thermometer rest in fat; it will give inaccurate readings.
Do not skip the resting period; slicing immediately causes juices to run onto the plate.
Do not use room-temperature sauce; it will warm the sliced meat. Keep chilled until serving.
Substitutions
Dairy-Free Swaps
General Alternatives
adjust cooking time 15-20 minutes shorter for leaner cuts
FAQ
Can I use a different cut of beef?
Yes. Ribeye roast, top sirloin, or rib roast work well. Leaner cuts like top round may cook 15-20 minutes faster. Fatty cuts like prime rib may take slightly longer. Adjust timing accordingly and use meat thermometer as your guide.
What if my roast finishes cooking before guests arrive?
Remove roast when thermometer hits target temperature, tent with foil, and hold in a 200F oven for up to 45 minutes. The foil will keep it warm without overcooking. Carve just before serving for best texture.
How long can I keep leftovers?
Refrigerate sliced roast and sauce separately in airtight containers for up to 3 days. Freeze roast up to 3 months; thaw overnight in refrigerator before reheating. Sauce does not freeze well due to sour cream base.