Pat-dry the diced lamb with a paper towel. Season it generously with salt and black pepper. Heat the olive oil in a large pot on medium-high heat, add 1/2 of the seasoned lamb, and brown the pieces for 2-3 minutes evenly on all sides. Remove the seared lamb with a slotted spoon and set aside. Repeat with the other half.
Add the seared lamb pieces back in and mix to combine them with the sauce. Put a lid on the Dutch oven and transfer the stew to the preheated oven for 1 hour and 15 minutes.
Add the sliced carrots and potatoes and combine everything. Return it to the oven for another 45 minutes until the carrots and potatoes are cooked through.
1 lb carrots, 1 lb potatoes
If the stew has a lot of liquid I suggest leaving the lid off for the last 45 minutes for it to reduce down and get more concentrated. Add the lid if the liquid levels good or add more stock if it's on the lower side. The vegetables don't have to be fully submerged to cook if the lid is on.
Once fully cooked, season to taste with salt and pepper and serve with freshly chopped parsley.
1 tbsp fresh parsley
Notes
Sear not stew: Sear the diced lamb in batches as you want to get some color on it rather tham stewing it in its liquids at this stage.Adjust consistency: Add 1 tbsp of cornstarch mixed in 1/4 cup of stew juices, stock, or water to the stew to further adjust the consistency for a thicker stew. Stir in the flour mixture and cook for another 5-10 minutes until it thickens up.Storage: This stew stores well in an airtight container in the refrigerator for 4 days. For longer storage, freeze it in batches for up to 3 months. Defrost and fully reheat it in a pot or microwave.