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Get a 'blender' or 'food processor' to combine your ingredients. Blend the ingredients for about a minute or two. Add the rest of the oats and most of the milk. Add the remaining milk about blend for the final time. Pour your mixture into rectangular plastic moulds. Refrigerate for half an hour. Defrost them in the microwave when you want to eat them.
Add all of your ingredients, except for the milk and half of the amount of oats into the blender/food processor. Keep going until they are combined well. Leave about 50ml and then blend your ingredients for another minute or so, until combined enough. Go no more than 20 to 30 seconds to reduce the chances of your protein bars becoming hardened easily, later on.  Then place in the freezer for a few hours. Then warm them up in the microwave for one and a half minutes. Enjoy!