Preheat your oven to 325 degrees. This step is crucial as it sets the stage for even cooking.
Season the lamb chunks generously with salt and pepper. Don't be shy; this will enhance the flavors significantly.
In a large dutch oven, heat the olive oil over medium heat. Add the seasoned lamb pieces in batches, browning them until they form a deep, golden crust, about 5 to 7 minutes per side. This step is key, as it locks in the juices for a tender stew.
Once browned, remove the lamb from the pot and set it aside. In the same pot, add the chopped yellow onion and minced garlic. Stir and scrape any brown bits from the bottom of the pot, which are packed with flavor.
Cook the onions and garlic until they become translucent and fragrant, about 5 to 6 minutes. You want them to soften and develop a bit of color, which adds depth to the stew.
Return the browned lamb to the pot. Next, make an herb bouquet by tying the thyme, parsley, and bay leaf together with kitchen twine. This makes it easy to add flavor without dealing with the herbs later.
Add the herb bouquet, salt, pepper, and enough water to cover the contents. I used about 6 cups, but this can vary based on the size of your pot.
Cover the pot and place it in the preheated oven. Let it cook for an hour. This slow cooking will transform the lamb into tender bites of goodness.
After an hour, take the pot out and carefully add the pears, potatoes, and string beans. Stir gently to combine.
Cover the pot again and return it to the oven. Let it cook for an additional hour, or longer if needed. You'll know it's ready when the lamb is fork-tender and the vegetables are cooked through.
Once done, remove the dutch oven from the oven. Carefully take out the lamb and place it in the center of a serving dish. Surround it with the cooked vegetables and pears, creating a beautiful presentation.
Remove the herb bouquet from the sauce. If you prefer a thicker sauce, you could rice one of the potatoes and add it back to the cooking liquid or mix corn starch with cold water to thicken. Simmer until it reaches your desired consistency.
Serve the stew hot with the gravy poured over each serving. Enjoy!