These Slow Cooker Lamb Shanks are tender, juicy, and full of rich, comforting flavors. The slow-cooked method ensures the lamb shanks are fall-off-the-bone delicious, perfect for a cozy winter meal.
Preheat slower cooker on low heat. The the shanks dry with paper towels and season them generously with salt and pepper on all sides.
On the stovetop, heat the oil in large pot over medium-high heat. Add lamb to pot and brown on all sides.
Transfer lamb to slow cooker.
Add vegetables. Sauté to soften slightly, about 3 to 5 minutes.
Mix in tomato & anchovy paste. Mix in cinnamon, salt and pepper.
Add the vermouth. Bring to a boil and cook for 3 to 4 minutes before mixing in the cranberry sauce and stock. Pour the mixture over the lamb in the slow cooker.
Place the cover on the slow cooker and cook on low for 7 to 8 hours, or until the lamb is very tender.
Transfer the lamb and vegetables to a serving dish and cover to keep warm while you thicken the sauce.
To Thicken The Sauce
Note: The liquid needs to be come to a boil to thicken properly. If your slow cooker can't bring the liquid to a boil, transfer the liquid to a pan and thicken on the stove.In a small bowl, mix 4 tablespoons of all-purpose flour with ½ cup of cold water until smooth.
Slowly pour the slurry into the the sauce while continuously whisking. This helps prevent lumps from forming.
Keep stirring the mixture as you add the slurry to ensure it is evenly distributed and thickens smoothly. Bring to a boil while whisking constantly then cook for 5 to 7 minutes to cook out the raw flour taste, stirring occasionally.