Preheat oven to 180 degrees celsius (fan-forced). Grease a 12-hole muffin tin and set aside.
Place quartered apple and whole pitted dates into the Thermomix bowl. Chop on Turbo for 10 seconds (or until apple is grated and dates are finely chopped). You may need to scrape down the sides a couple of times.
Add the banana and mix on Speed 5, 5 seconds.
Add the vegetable oil, milk and egg and mix on Reverse Speed 5, 15 seconds or until well combined.
Add the self-raising flour, coconut and sugar and gently mix with the spatula until just combined - be careful not to over-mix.
Spoon mixture into prepared muffins tins and sprinkle with extra raw sugar (optional).
Bake for approximately 20 minutes (turn tray after 10 minutes and then check at 15 minutes).
Leave to cool in the tray for 10 minutes before transferring to a wire rack to cool completely.