When you're vegetables are all chopped, add them to your slow cooker, with the meat. At times, I will lightly fry the meat and onions, but for slow cooking, the method of cooking seems to be more than enough for us to miss out this step at times.
Stir the cornflour into a little water in a cup, until it forms a smooth paste or is dissolved completely. It should look a little like milk. Add to the slow cooker.
Add seasoning and or stock cubes etc.
Stir the ingredients around well.
Add enough hot water to cover around half way up the ingredients. Be careful not to scald yourself.
Pop on the lid and cook for 4 hours on high or 8 hours on low, for a high wattage slow cooker. Adjust the cooking time based on your knowledge of your own machine. The vegetables are likely to take the longest to cook, especially the carrots and white sweet potatoes.
If your gravy looks too thin close to the end of cooking, mix up a little more cornflour and water, and add to the slow cooker, stirring the ingredients, and let cook for a further half hour.
Serve with buttered bread to mop up the gravy.
I often freeze some of this for another day.