Herb-Roasted British Lamb with Minted Pea Purée
Tender British lamb roasted with fresh herbs, served alongside a vibrant minted pea purée — a classic British Sunday roast centrepiece. This british-inspired lamb ready in about 95 minutes pairs British lamb leg, chopped fresh rosemary, chopped fresh thyme for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 450 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 lbs British lamb leg
- 2 tbsp, chopped fresh rosemary
- 1 tbsp, chopped fresh thyme
- 4, minced garlic cloves
- 3 tbsp olive oil
- 1 tsp sea salt
- 1/2 tsp black pepper
- 2 cups frozen peas
- 1/4 cup, chopped fresh mint leaves
- 2 tbsp unsalted butter
- 1 tbsp lemon juice
Instructions
- Step 1: Preheat oven to 375°F. Combine 3 tbsp olive oil, 2 tbsp chopped rosemary, 1 tbsp chopped thyme, 4 minced garlic cloves, 1 tsp sea salt, and 1/2 tsp black pepper in a small bowl. Rub this herb mixture all over the 2 lbs British lamb leg.
- Step 2: Place the lamb on a roasting rack in a baking pan and roast for 1 hour 15 minutes or until the internal temperature reaches 135°F for medium-rare. Remove from oven and let rest for 15 minutes.
- Step 3: While the lamb roasts, bring a saucepan of salted water to a boil. Add 2 cups frozen peas and cook for 3 minutes until tender and bright green. Drain and transfer peas to a blender.
- Step 4: Add 1/4 cup chopped fresh mint leaves, 2 tbsp unsalted butter, and 1 tbsp lemon juice to the peas. Blend until smooth and season with salt and pepper to taste.
- Step 5: Slice the rested lamb and serve with a generous dollop of minted pea purée on the side.
Frequently asked questions
How long does Herb-Roasted British Lamb with Minted Pea Purée take to make?
Total time is about 95 minutes (20 min prep + 75 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Herb-Roasted British Lamb with Minted Pea Purée?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep british lamb leg from drying out.
Can I substitute ingredients in Herb-Roasted British Lamb with Minted Pea Purée?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Herb-Roasted British Lamb with Minted Pea Purée for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Herb-Roasted British Lamb with Minted Pea Purée?
British lamb like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
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