If you’re craving a meal that wraps you in the cozy embrace of comfort food, then this Irish Lamb Stew with Mashed Potatoes Recipe is exactly what you need. It’s a hearty, soulful dish where tender chunks of lamb meld with earthy root vegetables and a rich, flavorful broth that’s perfected by slow simmering. Paired with creamy, buttery mashed potatoes, this traditional Irish classic is the ultimate way to warm up any chilly evening, bringing a little taste of Ireland right into your kitchen.

Ingredients You’ll Need
This dish comes together beautifully with simple, well-chosen ingredients that each play an important role in creating that signature stew flavor and texture. From tender lamb shoulder to fresh herbs and creamy potatoes, every element contributes to making this recipe truly special.
- Lamb shoulder, 2 lbs: The perfect cut for slow cooking, providing rich flavor and tenderness.
- Vegetable oil, 3 tablespoons: For browning the lamb and sautéing the vegetables, adding a subtle richness.
- Salt and freshly ground black pepper: Essential seasonings that enhance every ingredient’s natural taste.
- Large onion, sliced: Adds sweetness and depth as it softens in the pot.
- Garlic cloves, 2 minced: Brings a fragrant warmth that harmonizes with the lamb and herbs.
- Carrots, 3 peeled and sliced: Infuse a natural sweetness and vibrant color into the stew.
- Potatoes, 3 peeled and diced: Absorb the broth’s rich flavors while adding satisfying texture.
- Beef or lamb broth, 2 cups: Builds a savory, hearty base for the stew’s luscious sauce.
- Guinness stout, 1 cup (optional): Adds an iconic depth and maltiness that elevates the Irish authenticity.
- Tomato paste, 2 tablespoons: Contributes tangy richness and balances the flavors.
- Fresh thyme leaves, 1 teaspoon: Provides a subtle herbal note that brightens the stew.
- Fresh parsley, 1 tablespoon chopped: Added for freshness and color.
- Bay leaves, 2: Infuse a gentle earthy aroma during cooking.
- Potatoes for mashing, 1 1/2 lbs: Creamy and smooth, they complete the dish with comforting softness.
- Milk, 1/2 cup: Makes the mashed potatoes silky and rich.
- Butter, 1/4 cup: Adds luscious creaminess and boosts flavor in the mash.
How to Make Irish Lamb Stew with Mashed Potatoes Recipe
Step 1: Browning the Lamb
Begin by seasoning your lamb chunks generously with salt and freshly ground black pepper. Heat two tablespoons of oil in a large pot over medium-high heat and brown the lamb pieces on all sides until caramelized. This step locks in flavor and develops the deep, robust taste that defines a great stew. Don’t overcrowd the pot; working in batches keeps the meat searing evenly. Once browned, remove them and set aside for now.
Step 2: Sautéing Aromatics
In the same pot, add the sliced onion and minced garlic. Let them gently soften and become fragrant, stirring to make sure none of those flavorful bits from browning the lamb get wasted. The onions will add a natural sweetness that beautifully complements the rich lamb throughout the cooking process.
Step 3: Combining Ingredients
Add the browned lamb back into the pot along with your carrots, diced potatoes, beef or lamb broth, optional Guinness stout, tomato paste, thyme, parsley, and bay leaves. Stir it all together to combine, making sure every ingredient starts mingling and infusing together. This is where your stew begins to develop its hearty soul.
Step 4: Slow Simmering the Stew
Bring the mixture to a boil, then immediately reduce the heat to low and cover the pot with a lid. Let it simmer gently for 1 1/2 to 2 hours, stirring occasionally to prevent sticking. The slow cooking allows the lamb to tenderize and the vegetables to soak up that wonderful stew broth, resulting in a melt-in-your-mouth texture and deep, comforting flavors.
Step 5: Preparing the Mashed Potatoes
While the stew is working its magic, boil your potatoes for mashing in a separate pot until they are fork-tender—this usually takes around 15 to 20 minutes. Drain them well and return them to the pot for mashing.
Step 6: Mashing to Perfection
Add the milk and butter to the boiled potatoes, mashing until smooth and creamy. This step is the key to achieving that dreamy, comforting texture that makes your mashed potatoes the perfect bed for the stew. Season with salt and pepper to taste and set aside, keeping warm until ready to serve.
Step 7: Final Touches
Once your stew has cooked through and the lamb is wonderfully tender, remove the bay leaves and taste to adjust the seasoning if needed. The stew should be rich, hearty, and full of complex flavors. Now it’s time to bring everything together on the plate.
Step 8: Serving the Dish
Serve the hot stew with a generous scoop of creamy mashed potatoes either on top or on the side. Don’t forget to sprinkle a bit of freshly chopped parsley over the dish to add a pop of color and a fresh note.
How to Serve Irish Lamb Stew with Mashed Potatoes Recipe

Garnishes
Fresh chopped parsley is a beautiful garnish that brings brightness to this rich stew. If you want to add a little zing, a few thin slices of spring onion or a light drizzle of good quality olive oil can also enhance your presentation and flavor profile.
Side Dishes
This stew and mash combo is a star on its own, but if you want to round out your meal, consider serving it with a crisp green salad dressed with lemon vinaigrette or some buttered green beans. A crusty bread or soda bread is also wonderful for soaking up every last drop of the luscious stew sauce.
Creative Ways to Present
For a rustic yet elegant touch, serve your stew in individual earthenware bowls. Layer the mashed potatoes as a base and ladle the stew over it, letting the rich broth soak through slightly before serving. Garnished with herbs and maybe even a sprinkle of cracked black pepper, your presentation will look inviting and homey.
Make Ahead and Storage
Storing Leftovers
Leftover Irish lamb stew with mashed potatoes keeps wonderfully in the fridge for up to 3 days. Store the stew and mashed potatoes separately in airtight containers to maintain their textures and flavors perfectly.
Freezing
If you want to stash some away for later, the stew freezes very well. Pour your cooled stew into freezer-safe containers, leaving some room at the top for expansion, and freeze for up to 3 months. It’s best to freeze mashed potatoes separately as they sometimes change texture when thawed.
Reheating
When ready to enjoy your leftovers, reheat the stew gently on the stove over low heat, stirring occasionally. For mashed potatoes, warm them slowly in the microwave or over low heat with a splash of milk or butter to revive their creamy smoothness.
FAQs
Can I use other cuts of lamb for this Irish Lamb Stew with Mashed Potatoes Recipe?
Absolutely! While lamb shoulder is ideal for its tenderness after slow cooking, you can also use lamb shanks or neck, which provide great flavor and become deliciously soft after simmering.
Is Guinness stout necessary in the stew?
Guinness adds a lovely depth and a slightly bitter maltiness that’s traditional, but it’s optional. If you don’t have it on hand or prefer not to use alcohol, simply increase the broth amount slightly for just as tasty a result.
What type of potatoes are best for the mashed potatoes?
Starchy potatoes like Russets or Yukon Golds are best for mashing because they yield fluffy, creamy results that hold a smooth texture when combined with butter and milk.
Can I prepare the stew in advance?
Yes! In fact, this stew tastes even better the next day as the flavors continue to meld. Make it ahead, refrigerate, and gently reheat before serving with freshly mashed potatoes.
How do I thicken the stew if it’s too watery?
If your stew needs thickening, mix a little flour or cornstarch with cold water and stir it into the simmering stew. Let it cook for a few more minutes until the broth reaches your desired consistency.
Final Thoughts
There’s something incredibly satisfying about sitting down to a bowl of homemade Irish lamb stew paired with creamy mashed potatoes, especially when the flavors have been slowly coaxed out with care and love. I truly hope you give this Irish Lamb Stew with Mashed Potatoes Recipe a try, whether you’re looking for a comforting weeknight dinner or a dish to impress family and friends. It’s timeless, soul-warming, and wonderfully easy to make—just the kind of meal we all need in our kitchens.
Print
Irish Lamb Stew with Mashed Potatoes Recipe
- Prep Time: 0h 30m
- Cook Time: 2h 0m
- Total Time: 2h 30m
- Yield: 6 servings
- Category: Main Course
- Method: Stovetop
- Cuisine: Irish
Description
This traditional Irish stew features tender lamb shoulder simmered with potatoes, carrots, and aromatic herbs in a rich broth, optionally enhanced with Guinness stout. Served alongside creamy homemade mashed potatoes, this hearty and comforting dish is perfect for a cozy meal.
Ingredients
For the Irish Stew
- 2 lbs lamb shoulder, cut into 1 1/2-inch pieces
- 3 tablespoons vegetable oil
- Salt and freshly ground black pepper, to taste
- 1 large onion, sliced
- 2 cloves garlic, minced
- 3 medium carrots, peeled and sliced
- 3 medium potatoes, peeled and diced
- 2 cups beef or lamb broth
- 1 cup Guinness stout (optional)
- 2 tablespoons tomato paste
- 1 teaspoon fresh thyme leaves
- 1 tablespoon fresh parsley, chopped
- 2 bay leaves
For the Mashed Potatoes
- 1 1/2 lbs potatoes for mashing
- 1/2 cup milk
- 1/4 cup butter
- Salt and freshly ground black pepper, to taste
Instructions
- Season and Brown Lamb: Season the lamb pieces with salt and pepper. Heat 2 tablespoons of vegetable oil in a large pot over medium-high heat. Brown the lamb on all sides in batches to avoid overcrowding, adding more oil if necessary. Remove the browned lamb and set aside.
- Sauté Aromatics: In the same pot, add the sliced onion and minced garlic. Sauté until the onion becomes translucent and fragrant, about 5 minutes.
- Combine Ingredients: Return the lamb to the pot. Add the sliced carrots, diced potatoes, beef or lamb broth, Guinness stout if using, tomato paste, fresh thyme leaves, chopped parsley, and bay leaves. Stir everything together to combine the flavors.
- Simmer the Stew: Bring the mixture to a boil. Reduce heat to low, cover the pot, and let the stew simmer gently for 1 1/2 to 2 hours, or until the lamb is tender. Stir occasionally to prevent sticking.
- Boil Potatoes for Mashing: While the stew simmers, peel and cut potatoes for mashing. Boil them in a separate pot of salted water until tender, about 15 to 20 minutes. Drain well and return to the pot.
- Mash Potatoes: Add milk and butter to the boiled potatoes. Mash until smooth and creamy, seasoning with salt and pepper to taste.
- Finalize Stew and Serve: Remove bay leaves from the stew. Taste and adjust seasoning with salt and pepper if needed. Serve the hot stew with a generous serving of mashed potatoes either on top or on the side.
- Garnish: Optionally, garnish with additional chopped fresh parsley for a burst of color and freshness.
Notes
- For a richer flavor, use lamb broth instead of beef broth if available.
- Guinness stout adds depth but can be omitted for a milder taste.
- Ensure not to overcrowd the pot when browning lamb to achieve a good sear.
- Mashed potatoes can be made creamier by adding more butter or milk, according to preference.
- This stew tastes even better the next day as flavors develop further.
