01 -
Set oven to 350°F and prepare a heavy-bottomed ovenproof pan.
02 -
Heat vegetable oil over medium heat. Add lamb shanks and brown all sides until golden.
03 -
Add onion and garlic to the pan; cook until fragrant and slightly softened.
04 -
Pour in red wine, stock, tomato purée, and optional brown sugar. Add bay leaves and thyme. Bring to a simmer.
05 -
Cover the pan and place it in the oven. After one hour, reduce temperature to 300°F and continue braising for 2 to 3 hours until meat is tender and falls off the bone.
06 -
Remove lamb and herbs from pan. Blend the remaining sauce to a smooth consistency, then return to pan and season with salt and pepper.
07 -
Mix cornstarch with water to form a slurry, slowly incorporate into sauce while stirring until thickened to desired consistency.
08 -
Place lamb shanks on plates and serve sauce on the side.