Slow Roasting Leg of Lamb

Learn how to slow roasting leg of lamb perfectly with our detailed guide, including timing, temperature, and expert tips.

⏱️
1h - 3h
Cook Time
2-6 lb / 1-2.5 kg
🌡️
300°F / 150°C
Oven Temperature
⚖️
0.3 lb / 5 oz / 140 g
Portion Weight
Per adult serving
135-160°F / 55-70°C
Internal Temperature
Medium Rare to Well Done

Step-by-Step Instructions

  1. 1Marinate lamb overnight if desired
  2. 2Bring to room temperature
  3. 3Preheat oven to 275°F / 135°C
  4. 4Season generously all over
  5. 5Place on rack in roasting pan
  6. 6Roast slowly 2h30min - 5h depending on weight (5-10 lb / 2.5-4.5 kg)
  7. 7Baste every 45 minutes
  8. 8Check internal temperature reaches 130°F / 55°C
  9. 9Increase heat to 425°F / 220°C for last 15 minutes
  10. 10Rest 20 minutes before carving

Expert Tips for Slow Roasting

  • 💡Low temperature ensures even cooking
  • 💡Results in incredibly tender meat
  • 💡Greek-style with lemon and oregano
  • 💡Moroccan-style with spices works great

Leg of Lamb Temperature Guide

DonenessTemperatureDescription
Medium Rare135°F / 55°CWarm red center, tender and flavorful
Medium145°F / 65°CPink center, slightly firmer texture
Well Done160°F / 70°CBrown throughout, firm texture

Leg of Lamb Safety Guidelines

Important food safety practices when handling and cooking leg of lamb.

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Cook to proper internal temperature

⚠️

Use food thermometer

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Remember

When in doubt, use a food thermometer. It's the only reliable way to ensure your leg of lamb is safely cooked and delicious.