For the vegetable allsorts from the slow cooker, put the canned tomatoes in the insert of the slow cooker.
Wash the cauliflower and zucchini, cut into small pieces, clean the cream mushrooms and cut into quarters, add to the slow cooker with the peas, chop the feta and add salt, cayenne pepper and 5-spice mixture.
Stir, season to taste and cook with the lid closed on HIGH for 2.5 hours. Stir a little in between. At the end of the cooking time, stir the vegetables again and season to taste.