Preheat the oven to 180 degrees celsius.
Combine all dry base ingredients in a bowl and mix well.
To a bowl combine the milk, nut nutter and coconut oil. Microwave for 30 seconds (or heat on a stove), and mix until well combined.
Pour mixed wet ingredients into dry ingredients. Use hands to make a rough 'dough'.
Press into a greased baking tin (loaf size). Unless recipe is doubled then use a brownie tray.
Combine all ingredients in a blender except for the protein powder and blend well. Stir the protein powder through. Attempt to blend again but if it's too thick then hand stir. If still to thick add slightly more milk.
Adjust taste as desired. Pour on top of shortbread base.
Bake for 25 minutes. Remove and allow to cool before slicing into square, dusting with xylitol icing sugar and serving (with ice cream surely!). Store in fridge or freezer.
Servings 0