Stick wooden sticks into the center (stem end) of the apples. Place the candy melts and coconut oil into a microwave-safe bowl. Microwave the candy on high for 1 minute.
Stir vigorously to allow the candy to continue melting with the residual heat. Return the candy to the microwave and heat in 15-second intervals, stirring well between each, until the candy mixture is smooth.
Pour melted chocolate over each apple, allowing the excess to run back into the bowl. Place the apples on waxed or parchment paper to dry.
If you want to add sprinkles or other candies to stick on the outside do so a few minutes after the chocolate has been on, hardened just a bit but enough so it still sticks.