Slice each banana in half widthwise, then slice each half lengthwise, so you have 4 pieces per banana. Insert a popsicle stick into the base of each banana quarter. Add to a lined baking sheet and freeze for at least an hour, until solid.
Into a mug, add the peanut butter and 1/2 tablespoon of the coconut oil. Heat in the microwave for 30 second increments, until runny.
Dip one frozen banana quarter into the peanut butter, swirling to coat. Hold it over the cup and move it around so the excess peanut butter drips off, then return it to the baking sheet. Continue with the remaining banana quarters. Once all are coated, return the sheet to the freezer for around 20 minutes, until the peanut butter is frozen.
Into a mug, add the white chocolate chips and the remaining tablespoon of coconut oil. Heat in the microwave in 20 second increments at 30% power (see the tip), stirring in between, until fully melted.
Dip one frozen, peanut butter coated banana into the melted white chocolate, swirling to coat. Hold it over the cup and move it around so the excess chocolate drips off, then return it to the baking sheet. Continue with the remaining bananas. Next, quickly, before the white chocolate firms up, place 2 chocolate chip “eyes near the top of each ghost. Return the pan of finished ghosts to the freezer to chill for at least 20 more minutes, until frozen.
It’s totally fine and fun if a little of the extra chocolate settles around the pops, but if you want to be extra-fancy, you can shave off any excess chocolate with a paring knife once the pops are frozen solid.