Seasonal Irish Craft Beer Braised Lamb Shanks with Root Vegetable Mash

By AislePrompt Editorial · Published 2026-06-04 · Updated 2026-06-04

Tender lamb shanks slow-braised in a seasonal Irish craft beer reduction, served with creamy root vegetable mash for a cozy dinner. This Irish-inspired lamb recipe, ready in about 205 minutes, pairs lamb shanks, salt, black pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 600 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

• 4 (about 3 lbs total) lamb shanks
• 1 1/2 tsp salt
• 1 tsp black pepper
• 3 tbsp olive oil
• 1 large yellow onion, chopped
• 3 medium carrots, chopped
• 2 celery stalks, chopped
• 4 garlic cloves, minced
• 16 fl oz seasonal Irish craft beer
• 2 cups beef broth
• 2 tbsp tomato paste
• 2 fresh rosemary sprigs
• 2 fresh thyme sprigs
• 2 medium parsnips, peeled and chopped
• 2 medium potatoes, peeled and chopped
• 3 tbsp unsalted butter
• 1/2 cup whole milk

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Instructions

1. Step 1: Preheat oven to 325°F. Season 4 lamb shanks with 1 1/2 tsp salt and 1 tsp black pepper.
2. Step 2: Heat 3 tbsp olive oil in a large oven-safe pot over medium-high heat. Sear lamb shanks on all sides until deeply browned, about 4 minutes per side. Remove and set aside.
3. Step 3: Add 1 large chopped yellow onion, 3 chopped carrots, 2 chopped celery stalks, and 4 minced garlic cloves to the pot. Sauté for 5-6 minutes until vegetables soften and become fragrant.
4. Step 4: Stir in 2 tbsp tomato paste and cook for 1 minute. Pour in 16 fl oz seasonal Irish craft beer and 2 cups beef broth, scraping up browned bits from the bottom.
5. Step 5: Return lamb shanks to the pot along with 2 sprigs fresh rosemary and 2 sprigs fresh thyme. Bring to a simmer, cover, and transfer to the oven.
6. Step 6: Braise lamb shanks in oven for 2.5 to 3 hours until meat is fork-tender and falling off the bone.
7. Step 7: Meanwhile, boil 2 medium peeled and chopped parsnips and 2 medium peeled and chopped potatoes in salted water for 20 minutes until tender. Drain and mash with 3 tbsp unsalted butter and 1/2 cup whole milk until smooth.
8. Step 8: Serve lamb shanks over a bed of root vegetable mash, spooning some of the braising liquid and vegetables over the top.