Place all the ingredients in a slow cooker bowl. Place the lid and cook for 7-8 hours on low or 4-5 hours on high. Add the potatoes ¾ way of slow cooking. Check the seasoning.
Freeze any leftover and store for up to 4-6 months in the freezer.
Notes
If you want to serve dumplings:Put in a bowl 150g self-raising flour and 2 tbsp. butter, some fresh herbs with some salt and pepper.
Add a few tbsp of buttermilk or cold water and stir until it comes together into a soft dough. Roll into 6-10 balls. Add to the stew after 6 hours, put the lid back on and cook for another 1-2 hours until the dumplings have puffed up and are cooked through.
Keyword irish, Kevin Dundon, Lamb, one pot wonder, slow cooker