In a food processor blend 2 Cups of the yoghurt with the strawberries and maple syrup (you can leave out the maple syrup, it depends a little on the greek yoghurt, some are more sour than others)
Line a large flat dish with baking paper (ensure the dish will fit in your freezer before proceeding)
Pour the strawberry yoghurt mixture into the dish, for best results you want it to be about 1/2 cm thick. (To be honest the batch I used in the video and for the photos was a touch too thick. I have had better results when it is around the 1/2 cm thickness) .Note the colour will change when frozen, the pink becomes more vibrant.
Use the remaining 1/2 cup of yoghurt to create ghosts on the pink strawberry yoghurt. It goes a bit like this.. Blob a blob of yoghurt using a teaspoon. Take a chopstick and swirl a tail shape. With the chop stick create two little ghostly arms by swirling the yoghurt upwards
Decorate with choc drops. 2 small eyes, 1 large mouth
Freeze... Depends on the thickness, overnight will always be a winner
Peel off the baking paper and break up into pieces
Notes
I would suggest serving this sort of dish alfresco as it can get messy
Recipe by My Kids Lick The Bowl at https://mykidslickthebowl.com/spooky-yoghurt-bark/