This Jamie Oliver 15 Minute Meal Mustard Lamb is a comforting and flavor-rich recipe, which includes mustard-coated lamb and creamy leeks‑and‑potato mash. It’s a satisfying, homely dinner ready in about 20 minutes.
Jamie Oliver 15 Minute Meal Mustard Lamb Ingredients
Mash:
- 3 leeks
- 800 g potatoes
- Semi-skimmed milk
- 1 whole nutmeg, for grating
- Optional: a knob of unsalted butter
Lamb:
- 400 g lamb neck fillet
- 2 tsp English mustard powder
- Rapeseed oil
- 1 heaped tbsp plain flour
- 250 ml quality cider
- 2 heaped tsp mint sauce
Salad:
- 1 inner celery heart
- 1 eating apple
- 100 g watercress
- 1 bunch fresh mint
- 1 tbsp cider vinegar
How To Make Jamie Oliver 15 Minute Meal Mustard Lamb
- Cook leeks & potatoes: Slice leeks in half, rinse, slice (with potatoes) using a processor, place in a medium pan with salt and boiling water. Boil until tender, then drain.
- Season the lamb: Butterfly lamb pieces by scoring and opening, season with salt, pepper, and mustard powder. Sear in a hot frying pan with oil, turning until golden.
- Make the salad: Coarsely grate celery stalks and apple in a processor, reserving celery leaves. Toss with watercress, chopped mint, cider vinegar, and oil. Season.
- Mash it: Mash the drained potatoes and leeks, seasoning well, then loosen with milk. Grate in nutmeg and optionally stir in butter. Spread on a platter.
- Make the gravy: Remove lamb from the pan. Stir flour into pan juices, add cider and any resting juices, then stir in mint sauce. Bring to the boil.
- Serve: Slice the lamb and serve atop the mash with the cider-gravy. Scatter celery leaves over the mash, with the salad on the side.

Recipe Tips
- How to avoid overcooking lamb?
Turn often and remove once lightly firm—neck fillet cooks fast. - Can I substitute cider?
Use dry white wine or beef stock as an alternative. - Why grate apple and celery together?
It adds crisp sweetness and balances the rich gravy. - Can I make the mash extra smooth?
Pass through a ricer or add extra milk and butter.
What To Serve With Mustard Lamb
Perfect with:
- Crusty wholemeal bread
- Garlic green beans
- A glass of sparkling cider or crisp white wine
How To Store Mustard Lamb
Refrigerate:
Store lamb, mash, and salad separately in airtight containers for up to 2 days.
Reheat:
Gently warm lamb in a pan and reheat mash with a splash of milk. Prepare salad fresh.
Mustard Lamb Nutrition Facts
- Calories: ~538 kcal per serving
- Fat: 20 g
- Carbohydrates: 55 g
- Protein: 36 g
- Sugar: 8 g
Nutrition information is estimated and may vary based on ingredients and cooking methods used.
FAQs
Can I use chicken or beef instead of lamb?
Yes—adjust cooking time and keep mustard coating.
Is the cider sauce optional?
It adds tang and sweetness, but you can skip for a simpler pan jus.
Can I prepare components in advance?
Mash and salad are best made fresh; lamb can be seared in advance.
How to make it gluten-free?
Use GF flour and ensure cider is gluten-free.
Jamie Oliver 15 Minute Meal – Mustard Lamb
Course: DinnerCuisine: British-InspiredDifficulty: Easy4
servings5
minutes10
minutes538
Butterflied mustard-coated lamb cooked in cider gravy, served on creamy leek mash with a crisp apple–celery salad.
Ingredients
3 leeks
800 g potatoes
Semi-skimmed milk
1 nutmeg
Optional butter
400 g lamb neck
2 tsp mustard powder
Rapeseed oil
1 tbsp flour
250 ml cider
2 tsp mint sauce
1 celery heart
1 apple
100 g watercress
1 bunch mint
1 tbsp cider vinegar
Directions
- Slice and boil leeks and potatoes until tender—drain.
- Season and sear butterflied lamb until golden.
- Grate celery and apple, toss with watercress, mint, vinegar, and oil.
- Mash potatoes and leeks with milk, nutmeg, and butter.
- Make gravy by stirring flour into lamb pan juices, then add cider and mint sauce.
- Slice lamb, serve on mash with gravy, salad, and celery leaves.
Notes
- Use dry cider or white wine.
- Mash can be made smoother with a ricer.
- Salad adds freshness—make just before serving.
- Leftovers: reheat lamb & mash, serve with fresh salad.