Halve the apples. Remove the core with a melon baller.
Melt the white chocolate. You can melt it in a bain marie, microwave or directly in a pot on low heat, just be sure to stir constantly. Place the melted chocolate in a bowl.
Ghost
Stick a toothpick into half an apple and hold it by the toothpick over the bowl.
Use a small spoon to shape the wavy bottom of the ghost. Make sure the chocolate drips towards the uncovered end of the apple.
Spoon chocolate over the remaining apple and tap the fruit over the bowl so all the excess chocolate drips off.
Allow to set on parchment paper (if you want, you can trace the wavy bottom of the ghost with melted dark chocolate).
Eyeball
Use a spoon and white chocolate to shape a circle (the iris) around the middle of an apple half.
Cover the remaining apple towards the edge with white chocolate.
Allow to set.
Melt dark chocolate and add it to a piping utensil or bag.
Shape an outline around the iris, pipe the pupil and top with a white chocolate highlight.
Spider
Spoon white chocolate over the entire apple half.
Top with three large candy eyes and sprinkles.
Allow to set.
Place the apple on top of a plastic spider. If you don’t have one, you can use pretzel sticks for legs.
BOO
Pipe the letters onto an apple half. If you want, you can trace around the letters with dark chocolate.
Brain
Create the brain details onto an apple half by making one thick line down the middle.
Then, u-shape the chocolate to each side.
Skull
Shape the eyes and nose using white chocolate and then pipe around until you’ve created a skull shape.
Spiderweb
Pipe eight intersecting lines and then make two rows of curved web details from line to line.