Preheat the oven to 350 degrees and line two baking sheets with parchment paper.
In a medium bowl, whisk flour, baking powder and salt together.
In another medium bowl, cream butter and granulated sugar until light and fluffy.
Next, add egg and vanilla, and beat until combined.
Add dry ingredients into wet ingredients. Stir to combine. Chill
In a small bowl, add brown sugar.
Dip each pineapple ring into the brown sugar followed by dipping it into the coconut.
Place coconut side down on the prepared baking sheet.
Place a cherry in the center of each pineapple ring.
Cover and press cookie dough onto the rings.
Bake for 14 minutes or until the coconut has browned.