Rack of Lamb with an Exquisite Welsh Onion Cake

Welcome to my kitchen, fellow foodies! Today I am excited to share with you my special recipe for Rack of Lamb on Welsh Onion Cake. This dish is a classic British delicacy that will surely impress your guests and leave them wanting more.

As a chef specializing in British cuisine, I believe that cooking should be an experience that satisfies both the taste buds and the soul. And this recipe delivers just that – a hearty, flavorful meal that reminds us of home and traditions.

But don’t worry if you are new to cooking or intimidated by lamb recipes. With my step-by-step instructions, helpful tips and substitutions, you will soon become a pro. And trust me, the effort is worth it when you take your first bite of the succulent lamb paired with fluffy Welsh onion cake.

So let’s grab those ingredients, preheat the oven, and get started on making a delicious lamb dish that will be the highlight of your dinner table.

Why You’ll Love This Recipe

Rack of Lamb on Welsh Onion Cake
Rack of Lamb on Welsh Onion Cake

Are you tired of the same old roast lamb at every Sunday dinner? Need a recipe that will wow your friends and family? Look no further than this Rack of Lamb on Welsh Onion Cake recipe. Trust me, you will love it.

Not only is this dish visually stunning with its succulent racks of lamb and golden Welsh onion cake, but it’s also incredibly flavorful. The herb crusted rack of lamb is juicy and tender, while the Welsh onion cake provides a slightly sweet and savory contrast.

But what really sets this recipe apart is its unique blend of traditional British ingredients. The floury potatoes, or Maris Piper and King Edwards, are an essential component of British cuisine. And the use of Welsh onion in the cake pays homage to the dish’s origins in Wales.

This recipe has received rave reviews from top British chefs such as James Martin and has even been featured in Taste magazine. It’s perfect for any special occasion or dinner party where you want to impress your guests with a delicious lamb dish.

So why settle for plain roast lamb when you can take it up a notch with this Rack of Lamb on Welsh Onion Cake? Give it a try and taste for yourself why this recipe is so beloved among foodies everywhere.

Ingredient List

 Rack of lamb, perfectly seasoned and seared to perfection, rests atop a bed of Welsh onion cake.
Rack of lamb, perfectly seasoned and seared to perfection, rests atop a bed of Welsh onion cake.

Rack of Lamb on Welsh Onion Cake Recipe Ingredients

  • 2 racks of lamb, 6 bones each
  • 800 g floury potatoes (King Edwards or Maris Piper)
  • 400 g white onions, thinly sliced
  • 30 g melted butter
  • 2 Welsh onions, thinly sliced
  • 2 tbsp. fresh rosemary
  • Salt and black pepper

This recipe requires only a few basic ingredients, but the quality of the ingredients used is critical in achieving a delicious lamb dish. The racks of lamb should be of premium quality and have a good amount of fat content for successful roasting. For the floury potatoes, King Edwards or Maris Pipers work best as they have a high starch content that helps make the onion cake fluffy.

In this recipe, we also use thinly sliced white onions and Welsh onions which add a lovely depth of flavor to the dish. It’s best to choose fresh rosemary for its unique fragrance and taste.

Finally, using good-quality butter can make a significant difference in flavor. We recommend melting unsalted butter and brushing it over the racks of lamb to help it develop an attractive crust during cooking.

The Recipe How-To

 This hearty and delicious British dish is sure to impress your dinner guests!
This hearty and delicious British dish is sure to impress your dinner guests!

Step 1: Preheat Oven

The first step in making this delicious lamb dish is to preheat the oven to 180°C.

Step 2: Season and Brown the Lamb Racks

Next, season the racks of lamb generously with salt, pepper, and chopped rosemary. Heat a skillet over high heat then add some vegetable oil. Once the skillet is hot, sear the lamb racks for about 2-3 minutes on each side or until browned.

Step 3: Prepare Welsh Onion Cake Teisen Winwns

For the next part of this recipe, we’ll prepare the Welsh Onion Cake Teisen Winwns. In a bowl, mix 800g of floury potatoes (such as Maris Piper or King Edwards), grated and drained welsh onions (approx. 400g), 100g of melted butter, and season well.

Step 4: Put Lamb on Top of Onion Cake Teisen Winwns

Take a roasting tin and put the browned lamb racks on top of a layer of sliced welsh onion cake teisen winwns. Put the lamb racks with bones facing towards each other for better roasting.

Step 5: Roast in Oven

Roast the lamb for about 15 minutes for medium-rare or longer if you prefer your meat well-done.

Step 6: Rest and Serve

Once done, take out of the oven and let it rest for about 5 minutes. Then slice the lamb into chops and serve with slices of Welsh Onion Cake Teisen Winwns on the side.

This recipe is inspired by British chef James Martin and has been featured in Taste Magazine. It’s an easy recipe to create a restaurant-worthy dish at home using sous vide or herb-crusted rack techniques. If you want to try something different, you can substitute the lamb racks with roast lamb leg, lamb shoulder, or crusted lamb chops.

Substitutions and Variations

 The sweet and savory flavors of the onion cake complement the tender lamb perfectly.
The sweet and savory flavors of the onion cake complement the tender lamb perfectly.

This lamb and onion cake recipe is already a fantastic dish, but there are many ways you can make it your own. Here are some ideas for substitutions and variations that will help you experiment with the dish and bring out different subtle flavors.

1. Veggie Options: If you’re looking to reduce meat intake or avoid it altogether, try swapping lamb for roasted root vegetables like butternut squash, portobello mushrooms, or eggplant. You can also use seitan or tempeh in place of lamb for a delicious vegetarian version of this recipe.

2. Welsh Onion Cake: The Welsh onion cake is the star of this recipe, but you can swap it for other savory cakes like a cheesy cauliflower or broccoli mash, cheesy mashed potatoes, or a light polenta base.

3. Spices: This recipe calls for rosemary as an herb in the lamb marinade, but you can substitute thyme, oregano or other herbs of your choice to give it an extra kick. You could also add chili powder or curry powder if you enjoy a bit of heat in your meals.

4. Potatoes: I recommend Maris Piper and King Edwards potatoes to create the perfect fluffy, floury texture. If these varieties aren’t available, however, you can swap them for any floury potato type with similar characteristics (such as Russet).

5. Other Cuts of Lamb: This recipe calls for racks of lamb – one of the more common cuts of meat commonly found at grocery stores – but there are other parts available that create equally delicious dishes such as sous-vide herb crusted rack loin chops or roasted shoulder of lamb.

6. Leeks: Although not typical in this recipe, leeks are commonly used in Welsh cuisine and would be an excellent addition to the dish if thinly sliced and added during step 4.

By playing with ingredients and substitutions, you’ll be on your way to creating an entirely new dish, with your own unique stamp on it. Be creative and adventurous, and don’t be afraid to test out flavor combinations you’ve never tried before.

Serving and Pairing

 This meal is perfect for special occasions or a cozy night in.
This meal is perfect for special occasions or a cozy night in.

Now that your delicious Welsh Onion Cake with Rack of Lamb is ready, it’s time to make it look as stunning as it tastes. Let me guide you through the best presentation and pairing options.

Firstly, I suggest you cut your Rack of Lamb into individual chops so that each person gets their own portion. Each chop should have a beautiful pink center contrasting with a golden brown crust. It’s important to note that each chopped rack contains six slices and two cutlets, which means one rack is good for serving three people.

Now, let’s talk about pairing. The perfect wine to go with lamb is red, and my top pick would be a Cabernet Sauvignon or Merlot with strong tannins to balance the richness of the dish. However, if you prefer a full-bodied white wine, an oaked Chardonnay or French Sauvignon Blanc would do the trick.

For sides, roasted vegetables such as carrots, parsnips, and Brussel sprouts complement the sweetness of the Welsh Onion Cake perfectly while adding some color variety on your plate. I also recommend buttery mashed potatoes or wilted spinach leaves for an extra dose of comfort.

One tip to keep in mind: keep your sauce light and simple to avoid overshadowing the rich flavors of your lamb dish. A drizzle of balsamic glaze on top can add some zest to your dish without overpowering it.

Finally, enjoy your masterpiece! This meal is perfect for dinner parties with friends and family, and it’s guaranteed to impress whoever tries it. Don’t forget to savor every bite of this divine British classic.

Make-Ahead, Storing and Reheating

 Don't be intimidated by the thought of cooking lamb - this recipe is foolproof!
Don’t be intimidated by the thought of cooking lamb – this recipe is foolproof!

One of the best things about this Rack of Lamb on Welsh Onion Cake recipe is that you can make preparations well in advance. As a busy chef, I know how valuable it is to have pre-prepared dishes that I can quickly heat up when needed without compromising on taste.

To make-ahead, prepare the Welsh Onion Cake and cook the racks of lamb up to two days beforehand. Once they are done, let them cool to room temperature before wrapping them tightly in aluminum foil or plastic wrap and storing in the fridge. This ensures that the flavors will mingle together and that you can have a perfectly cooked dish every time.

Reheating is easy, just preheat your oven to 180C (350F), place the wrapped racks of lamb in a roasting tin, and let them heat for about 15 minutes until properly warmed through. For the onion cake, reheat slices in a non-stick frying pan over medium heat for a few minutes on either side until lightly toasted.

If you’re looking to store your Welsh Onion Cake, wrap individual slices or the whole cake tightly in plastic wrap before refrigerating for up to three days. You could also consider freezing your onion cake slices for longer-term storage; simply wrap each slice individually with cling film before placing them in an airtight container and freezing for up to two months.

When you’re ready to serve again, pop them straight into a preheated oven or defrost overnight in the fridge before reheating on medium heat. Trust me; it’ll be like having freshly made onion cake all over again!

Tips for Perfect Results

 The key to achieving the perfect sear on the lamb is a hot pan and a little bit of oil.
The key to achieving the perfect sear on the lamb is a hot pan and a little bit of oil.

Now that you’ve got a handle on the ingredients and recipe, allow me to walk you through some tips and tricks to ensure your lamb dish comes out perfectly.

1. Preheat your oven: Before putting anything in the oven, make sure it has reached the desired temperature. This will help ensure even cooking and better results overall. For this recipe, make sure to preheat to 180°C.

2. Let it rest: Once your rack of lamb is cooked to perfection (125°F for medium-rare), remove from the oven and let it rest for 5-10 minutes before slicing. This allows the juices to redistribute throughout the meat, making for a juicier result.

3. Don’t overcook the potatoes: The key to making great potatoes to go with your welsh onion cake is not overcooking them. Boil them until just tender but not falling apart, then drain immediately.

4. Use fresh rosemary: Fresh herbs are always the best option when possible, and that’s especially true for rosemary in this recipe. This aromatic herb complements lamb beautifully, so make sure you use it.

5. Check your seasoning: To take your dish from good to great, make sure you taste and adjust the seasoning as needed during every stage of cooking.

6. Slice onions thinly: When making the Welsh onion cake, be sure to slice the onions as thinly as possible so they cook evenly.

7. Keep an eye on it: As with any recipe, keeping a watchful eye during cooking is crucial for achieving perfect results. Whether you’re roasting lamb or baking the onion cake, be mindful not to overcook any part of it.

With these tips in mind, you’re well on your way to creating a delicious lamb dish that would put James Martin and other British chefs to shame!

Bottom Line

In conclusion, this rack of lamb on Welsh onion cake recipe is a delightful combination of bold flavors that come together perfectly. From the herb-crusted lamb to the savory Welsh onion cake, everything about this dish is designed to please the palate.

Using high-quality ingredients like Maris Piper potatoes, Welsh onions, and butter can make all the difference in taste. I highly recommend giving this recipe a try for your next special occasion or dinner party.

Furthermore, this dish has a rich history and heritage that is deeply rooted in British cuisine. As a chef specializing in British cuisine, I take pride in exploring new ways to make classic recipes like this one exciting and delicious for my guests.

So why not wow your dinner guests with this delicious lamb dish? With careful preparation, you can create an unforgettable meal that pays homage to our shared culinary heritage. Happy cooking!

Rack of Lamb on Welsh Onion Cake

Rack of Lamb on Welsh Onion Cake Recipe

Eleanor Smallwood’s Teisen nionod, or onion cake, is Welsh comfort food at its best – layers of potatoes and onion baked in butter until meltingly soft, From uktv.co.uk/food/recipe. Posted for ZWT6.
Course Main Course
Cuisine British
Keyword < 4 Hours, Easy
Prep Time 15 minutes
Cook Time 1 hour
Calories 360.2kcal


  • 800 g floury potatoes (such as King Edwards or Maris Piper)
  • 100 g melted butter
  • 400 g white onions, sliced
  • 2 racks of lamb, each with 6 bones
  • 1 sprig rosemary


  • Preheat the oven to 200C/gas 6.
  • Peel the potatoes and slice very finely with a mandolin or sharp knife.
  • Toss with the melted butter and season with plenty of salt and black pepper.
  • Brush a shallow ovenproof dish with a little a little more melted butter.
  • Layer the potato and onion in the dish, starting with potato and finishing with a neat layer of overlapping potato slices.
  • Drizzle any remaining butter over the top.
  • Cover the dish with foil and bake in the oven for 1 hour.
  • Meanwhile, take the lamb out of the fridge to come to room temperature.
  • After the onion cake has had an hour in the oven, remove the tin foil.
  • Sit the lamb racks on top with their bones interlaced and tuck the rosemary sprig in the middle.
  • Return to the oven for 15-25 minutes, depending on the size of the racks and how you like your lamb cooked.
  • By now the potatoes should be beautifully tender and browned on the top.


Serving: 324g | Calories: 360.2kcal | Carbohydrates: 41.5g | Protein: 4.5g | Fat: 20.4g | Saturated Fat: 12.8g | Cholesterol: 53.4mg | Sodium: 158.1mg | Fiber: 6.2g | Sugar: 6.6g

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