add the honey, balsamic for 30seconds then add the can of tomatoes and remove from the heat as soon as it starts to simmer/bubble
Throw it all in the slow cooker and cook for 8hrs on low (4 hours high but low gives better results)
After 8 hours, remove lamb and foil to keep warm, add sauce to a saucepan over medium high heat and reduce (add corn flour/water if you want it thicker)
Server with good splash of reduced sauce and favourite veg (Roasted or mashed potato/sweet potato and steamed broccolini works well)