James Martin Spatchcock Chicken

This James Martin spatchcock chicken is a simple, high-reward roast that delivers crisp, golden skin and juicy meat in a fraction of the time of a whole bird. Spatchcocking (butterflying) helps the chicken cook quickly and evenly, while a lemony herb butter keeps everything deeply savoury and fragrant. It’s an easy, weekend-worthy dinner that feels a bit special without being fussy. Total time is about 1 hour 10 minutes, including resting.

Ingredients

For the chicken and potato tray

• 1 whole chicken (about 1.6–2kg)
• 750g baby potatoes, halved
• 1 large onion, thickly sliced
• 1 tbsp olive oil
• 1½ tsp fine sea salt
• 1 tsp freshly ground black pepper
• 1 tsp smoked paprika (optional)

For the lemon garlic herb butter

• 75g unsalted butter, softened
• 3 garlic cloves, finely grated or crushed
• Zest of 1 lemon (plus lemon wedges to serve)
• 2 tbsp chopped flat-leaf parsley
• 1 tbsp thyme leaves (or 1 tsp dried thyme)
• 1 tsp Dijon mustard (optional)

For an optional quick pan sauce

• 100ml dry white wine (optional)
• 200ml chicken stock
• 1 tsp plain flour (optional, for thickening)

How to Make James Martin Spatchcock Chicken

• Prepare the oven: Preheat the oven to 200°C or 180°C fan. Place a shelf in the middle of the oven so the chicken roasts evenly and the skin colours nicely.
• Start the potato tray: Add the halved baby potatoes and sliced onion to a large roasting tray. Drizzle with olive oil, then season with ½ tsp of the salt and a good pinch of pepper. Toss well and spread out into an even layer.
• Spatchcock the chicken: Place the chicken breast-side down on a board. Using sturdy kitchen scissors, cut down one side of the backbone, then the other, and remove it. Flip the chicken over and press down firmly on the breastbone to flatten. Pat the skin dry with kitchen paper.
• Mix the herb butter: In a small bowl, mash the softened butter with the garlic, lemon zest, parsley, thyme, and Dijon (if using) until evenly combined.
• Season the chicken: Carefully loosen the skin over the breasts and thighs with your fingers. Rub most of the herb butter underneath the skin, then spread the rest over the top. Season with the remaining salt and pepper. Sprinkle over smoked paprika if you like a deeper, roasty flavour.
• Roast: Sit the chicken skin-side up on top of the potatoes and onion. Roast for 45–55 minutes, depending on size, until the skin is crisp and deeply golden. The chicken is cooked when the thickest part of the thigh reaches 75°C, or the juices run clear when pierced.
• Rest (cooling step): Transfer the chicken to a board and rest for 10–15 minutes. This is what keeps the meat juicy. While it rests, toss the potatoes through the tray juices. If you want more colour, return the tray to the oven for 10 minutes.
• Optional pan sauce (assembling step): Place the roasting tray on the hob over medium heat. Stir in 1 tsp flour for 30 seconds if you want a thicker sauce, then add the wine (if using) and simmer for 1 minute. Add the stock, scrape up the sticky bits, and simmer until lightly reduced.
• Carve and serve: Cut the chicken into quarters (or slice the breasts and separate the legs). Serve with the potatoes, onions, lemon wedges, and any pan sauce spooned over the top.

Tips

How do I get really crispy skin?

Dry skin is everything. Pat the chicken thoroughly with kitchen paper before adding any butter or seasoning, and roast on a hot tray at 200°C (180°C fan). If your chicken is pale near the end, give it 3–5 minutes under the grill, watching closely.

Why is my spatchcock chicken dry?

Dry chicken is usually overcooked. Use a thermometer if you can and pull it when the thickest part of the thigh hits 75°C. Resting for 10–15 minutes is not optional, it lets the juices settle back into the meat.

Can I prep the chicken ahead of time?

Yes. You can spatchcock and butter the chicken up to 24 hours in advance. Keep it uncovered (or loosely covered) in the fridge for drier skin, then bring it out 20–30 minutes before roasting so it cooks more evenly.

How do I stop the potatoes from steaming instead of roasting?

Use a large tray and keep the potatoes in a single layer. Overcrowding traps steam. Toss them in the tray juices during resting, then return to the oven if they need extra colour and crisp edges.

Serving Suggestions

• Buttered peas or garlicky green beans
• A simple rocket salad with lemon dressing
• Roasted carrots or tenderstem broccoli
• Crusty bread to mop up the pan juices

Storage

Room temperature

Don’t leave cooked chicken out for more than 2 hours (or 1 hour if the room is warm). Once it has cooled slightly, refrigerate promptly.

Refrigerator

Store leftovers in an airtight container for up to 3 days. Keep the chicken and potatoes together or separate them if you want the potatoes to re-crisp more easily. Reheat until piping hot all the way through.

Freezing

Freeze carved chicken (off the bone is easiest) for up to 3 months in a freezer-safe container or bag. Thaw overnight in the fridge before reheating. Potatoes can be frozen, but the texture softens, so I prefer freezing just the chicken.

Nutrition

• Calories: 650 kcal
• Carbohydrates: 28g
• Protein: 52g
• Fat: 36g
• Saturated fat: 12g
• Sodium: 980mg

Nutrition values are estimates and will vary depending on the exact ingredients used and portion sizes.

FAQs

James Martin Spatchcock Chicken

Recipe by Milli Rose

0.0 from 0 votes

Course: MainCuisine: BritishDifficulty: Easy

Servings

4

people

Prep time

15

minutes

Cooking time

55

minutes

Total time

70

minutes

Calories

650

kcal

1

hour 

10

minutes

Crispy-skinned, juicy spatchcock chicken roasted over baby potatoes with lemon, garlic, and herb butter. Faster than a traditional roast and packed with flavour.

Ingredients

• Chicken and potatoes

• 1 whole chicken (about 1.6–2kg)

• 750g baby potatoes, halved

• 1 large onion, thickly sliced

• 1 tbsp olive oil

• 1½ tsp fine sea salt

• 1 tsp freshly ground black pepper

• 1 tsp smoked paprika (optional)

• Lemon garlic herb butter

• 75g unsalted butter, softened

• 3 garlic cloves, finely grated or crushed

• 1 lemon, zest only (plus wedges to serve)

• 2 tbsp chopped flat-leaf parsley

• 1 tbsp thyme leaves (or 1 tsp dried thyme)

• 1 tsp Dijon mustard (optional)

• Optional quick pan sauce

• 100ml dry white wine (optional)

• 200ml chicken stock

• 1 tsp plain flour (optional, for thickening)

Directions

• Preheat the oven to 200°C (180°C fan). Put potatoes and onion in a roasting tray, toss with oil, salt, and pepper.
• Spatchcock the chicken by cutting out the backbone with kitchen scissors, then flip and press down firmly to flatten.
• Mix softened butter with garlic, lemon zest, herbs, and Dijon (if using).
• Loosen the skin over the breast and thighs and rub most of the butter underneath. Rub the rest over the top. Season, adding paprika if using.
• Sit chicken skin-side up on top of the potatoes. Roast for 45–55 minutes, until deeply golden and the thickest part reaches 75°C.
• Rest the chicken on a board for 10–15 minutes. Toss potatoes in the tray juices and return them to the oven if they need extra colour.
• Optional: Put the roasting tray on the hob. Add wine (if using), simmer 1 minute, then add stock. Scrape up the sticky bits and simmer to reduce.
• Carve into quarters (or slice the breast) and serve with the potatoes, onions, and lemon wedges.

Notes

• For the crispiest skin, pat the chicken very dry before seasoning.
• A thermometer takes the guesswork out: aim for 75°C in the thickest part of the thigh.
• If your potatoes need more colour, remove the rested chicken and give the tray 10 minutes back in the oven.