- 1 tri-tip roast, approx. 2 lb (0.9 kg) total - 8 cloves garlic, crushed - 3 tbsp (45 ml) olive oil - 2 tbsp (30 ml) lemon juice (from about 1 lemon) - Zest of 1 lemon - 1 tbsp (15 g) coarse kosher salt - 1 tsp (2 g) black pepper - 3 sprigs fresh rosemary - 2 tbsp (30 g) unsalted butter - 1 onion, sliced (optional)
1. Preheat oven to 425°F (220°C). In a small bowl combine crushed garlic, olive oil, lemon juice, lemon zest, kosher salt, and black pepper; rub mixture all over the tri-tip and tuck rosemary sprigs alongside the roast. 2. Place tri-tip on a rack over a roasting pan (scatter sliced onion in pan if using). Roast at 425°F (220°C) for 10 minutes, then reduce oven to 375°F (190°C) and continue roasting until internal temperature reaches 125–130°F (52–54°C) for medium-rare, about 20–30 additional minutes depending on size. 3. Remove roast, place butter on top, and tent loosely with foil; rest 10–15 minutes. Slice thinly across the grain and serve with pan juices and any roasted onions.
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