Instant Pot Lamb Shanks
Tender, Fall-Off-the-Bone Lamb in a Rich, Savory Sauce
Introduction
Lamb shanks are one of the most rewarding cuts of meat to cook. When prepared correctly, they transform from a tough, sinewy cut into something incredibly tender, rich, and deeply flavorful. Traditionally, lamb shanks require hours of slow braising in the oven or on the stovetop. While that method produces excellent results, it can be time-consuming and less practical for busy home cooks.
This is where the Instant Pot truly shines. By using pressure cooking, you can achieve the same slow-braised texture and depth of flavor in a fraction of the time. These Instant Pot Lamb Shanks are deeply savory, infused with aromatic vegetables, herbs, and a robust broth that thickens into a luxurious sauce. The result is a restaurant-quality dish that feels special enough for a holiday meal but simple enough for a weeknight dinner.
This recipe guide will walk you through everything you need to know to make perfect Instant Pot lamb shanks. From ingredient selection and preparation to step-by-step instructions, serving ideas, storage tips, and variations, this article is designed to help you confidently create a stunning dish every time.
Why Lamb Shanks Are Perfect for Pressure Cooking
Lamb shanks come from the lower portion of the animal’s leg, an area that gets a lot of use. Because of this, the meat contains a high amount of connective tissue and collagen. When cooked quickly, lamb shanks can be tough and chewy. When cooked slowly or under pressure, however, that collagen breaks down into gelatin, creating a tender texture and rich mouthfeel.
Pressure cooking mimics the effects of long, slow braising by combining heat, moisture, and pressure. In an Instant Pot, lamb shanks that would normally take three to four hours in the oven can become fork-tender in about an hour. The sealed environment also traps flavor, resulting in a sauce that is concentrated and deeply satisfying.
Ingredients Overview
Understanding the role of each ingredient will help you build layers of flavor and achieve the best possible result.
Olive Oil (2 tablespoons)
Olive oil is used for browning the lamb shanks and sautéing the vegetables. Browning is a critical step, as it creates caramelized flavor compounds that deepen the final dish.
Lamb Shanks (4, trimmed of excess fat)
Lamb shanks are the star of this recipe. Trimming excess surface fat prevents the sauce from becoming greasy while still allowing enough fat to contribute richness.
Onion (1, chopped)
Onion provides a savory, slightly sweet base for the sauce. As it cooks, it softens and blends into the broth, adding depth and body.
Carrots (2 large, chopped into large pieces)
Carrots add subtle sweetness and help balance the richness of the lamb. Cutting them into large pieces ensures they hold their shape during pressure cooking.
Celery Ribs (2, chopped into large pieces)
Celery contributes an aromatic, earthy note that rounds out the flavor profile of the sauce.
Garlic Cloves (3, smashed)
Garlic enhances the savory character of the dish. Smashing the cloves releases their oils without overpowering the other ingredients.
Tomato Paste (2 tablespoons)
Tomato paste adds umami, acidity, and richness. Cooking it briefly before adding liquid helps develop a deeper, more complex flavor.
Beef Broth (3 cups)
Beef broth provides a robust base that complements the lamb’s natural richness. A high-quality broth makes a noticeable difference.
Worcestershire Sauce (1 tablespoon)
Worcestershire sauce adds layers of umami, tang, and slight sweetness. It enhances the meatiness of the dish without drawing attention to itself.
Dried Thyme (1 teaspoon)
Thyme pairs exceptionally well with lamb, providing an earthy, herbal note.
Dried Oregano (1 teaspoon)
Oregano adds warmth and depth, reinforcing the savory profile of the sauce.
Bay Leaves (2)
Bay leaves lend subtle complexity during pressure cooking. They should be removed before serving.
Salt (1 teaspoon, or to taste)
Salt enhances all the flavors in the dish. Adjust according to the saltiness of your broth.
Cornstarch (1 tablespoon)
Cornstarch is used at the end to thicken the sauce into a glossy, spoon-coating consistency.
Equipment Needed
- Instant Pot or electric pressure cooker
- Tongs
- Cutting board and knife
- Measuring cups and spoons
- Small bowl (for cornstarch slurry)
Step-by-Step Instructions
Step 1: Prepare the Lamb Shanks
Pat the lamb shanks dry with paper towels. This step is essential for achieving a good sear. Season them lightly with salt and, if desired, black pepper.
Step 2: Brown the Lamb Shanks
Set the Instant Pot to the sauté function and add the olive oil. Once the oil is hot, add the lamb shanks in batches if necessary. Brown them on all sides until deeply golden. This process takes about 8 to 10 minutes total.
Remove the lamb shanks and set them aside. Do not skip this step, as it creates the foundation of flavor for the entire dish.
Step 3: Sauté the Vegetables
With the Instant Pot still on sauté, add the chopped onion, carrots, and celery. Cook for several minutes, stirring occasionally, until the vegetables begin to soften and the onion becomes translucent.
Add the smashed garlic cloves and cook briefly until fragrant.
Step 4: Add Tomato Paste and Deglaze
Stir in the tomato paste and cook for one to two minutes, allowing it to darken slightly. This step enhances its flavor.
Pour in a small amount of beef broth and scrape the bottom of the pot with a wooden spoon to release any browned bits. These bits are packed with flavor and should be fully incorporated into the sauce.
Step 5: Build the Braising Liquid
Add the remaining beef broth, Worcestershire sauce, dried thyme, dried oregano, bay leaves, and salt. Stir to combine.
Return the lamb shanks to the pot, arranging them so they are mostly submerged in the liquid.
Step 6: Pressure Cook
Secure the lid and set the Instant Pot to pressure cook on high for 45 minutes. Once the cooking time is complete, allow a natural pressure release for 15 minutes before carefully releasing any remaining pressure.
Step 7: Thicken the Sauce
Remove the lamb shanks and set them aside, keeping them warm. Discard the bay leaves.
Set the Instant Pot to sauté. In a small bowl, mix the cornstarch with a few tablespoons of cold water to create a slurry. Slowly stir the slurry into the simmering sauce until it thickens to your desired consistency.
Step 8: Finish and Serve
Return the lamb shanks to the pot and spoon the sauce over them. Allow them to simmer gently for a few minutes to reheat and absorb more flavor.
Serving Suggestions
Instant Pot lamb shanks are incredibly versatile and pair well with a variety of sides:
- Creamy mashed potatoes
- Polenta or grits
- Steamed rice or risotto
- Roasted root vegetables
- Crusty bread for soaking up the sauce
For a complete meal, consider serving with a simple green salad dressed with lemon and olive oil to balance the richness.
Storage and Reheating
Storage
Store leftover lamb shanks in an airtight container in the refrigerator for up to four days.
Freezing
This dish freezes exceptionally well. Cool completely, then freeze for up to three months.
Reheating
Reheat gently on the stovetop or in the Instant Pot on the sauté or warm setting, adding a splash of broth if needed.
Variations and Customizations
Red Wine Lamb Shanks
Replace one cup of beef broth with red wine for added depth and complexity.
Mediterranean-Style Lamb Shanks
Add rosemary, lemon peel, and olives for a Mediterranean flavor profile.
Spiced Lamb Shanks
Incorporate warm spices such as cinnamon, cumin, or coriander for a more aromatic dish.
Vegetable-Heavy Version
Add potatoes, parsnips, or turnips to the pot for a one-pot meal.
Troubleshooting Tips
- Meat not tender: Pressure cook for an additional 10 minutes
- Sauce too thin: Add more cornstarch slurry gradually
- Sauce too thick: Thin with warm broth
- Greasy sauce: Skim excess fat from the surface before thickening
Make-Ahead Tips
Lamb shanks often taste even better the next day. Prepare the dish a day ahead, refrigerate, and reheat gently before serving. The flavors will deepen as it rests.
Nutritional Considerations
Lamb shanks are rich in protein, iron, and essential minerals. Pairing them with vegetables and moderate portions helps create a balanced meal.
Final Thoughts
Instant Pot lamb shanks bring together the best of traditional slow cooking and modern convenience. With tender meat, a deeply savory sauce, and comforting aromas, this dish delivers an impressive result with minimal effort.
Whether you are preparing a special dinner or simply craving a hearty, satisfying meal, this recipe offers reliability, depth of flavor, and elegance. Once you experience how easily lamb shanks can be transformed in the Instant Pot, this dish is likely to become a staple in your kitchen.