Preheat oven on 180C / 350F (non fan forced)
Pop your chosen fat in your bowl – melted first in a pan if needs be (thermomix, stirring speed, 1:30 for butter, or 1 min for ghee, 100C).
Add everything else in the pudding list except chopped chocolate and nuts and mix well with handheld mixer or food processor for 20 secs OR thermomix speed 7, 15secs.)
Then add all chopped chunks and stir through with either a wooden spoon or speed 3, 4 seconds for TM users)
Grease your parchment paper lining your oven baking tin with a little ghee or oil of choice
Pour slab over the parchment
Bake for 20-25 minutes minutes (check at 20 minutes and 25 in case you have a strong oven or you’re using fan forced setting, as it may take less time.)