Drain the crushed pineapple, saving the juice for the cake batter.
Preheat the oven to 350℉ and line cupcake tin with paper liners.
Cupcake Batter
Beat together butter and sugar.
Beat in the egg and cream of coconut.
Combine flour, salt, and baking powder, then add the dry ingredients and pineapple juice in alternating additions, both starting and ending with the flour.
Stir in crushed pineapple.
Divide batter evenly among the 12 cupcake liners.
Cupcake Topping
On top the batter in each cup add 1 tablespoon of crushed pineapple then 1 teaspoon of shredded coconut.
Combine melted butter and brown sugar and drizzle over the top of each.
Bake about 18 minutes, then cool completely.
Buttercream Frosting
While the cupcakes are cooling, beat the butter until smooth. Add the remaining frosting ingredients and beat until desired consistency. (See tips and tricks in the post above).
Spread or pipe onto cooled cupcakes, top with a maraschino cherry, add extra toasted coconut, if desired, and enjoy!
Notes
Ingredient Notes:Coconut extract can be used in place of cream of coconut, but the measurements will need to be reduced quite a bit. Taste as you go to ensure it's not too much!The rum can be replaced with equal measurements of pineapple juice to keep these non-alcoholic. To make these extra boozy, soak the cherries in rum overnight before topping.Variations:These cupcakes are also delicious without the frosting, so feel free to skip it or to top them with whipped cream instead of frosting for a lighter touch of sweetness.These can also be made as piña colada upside down cupcake. To do this, do not use cupcake liners and instead spray the pan with non-stick spray. After preparing the cake batter, before putting it in the pan, first put into the bottom of each cup 1 teaspoon melted butter, 1 teaspoon brown sugar, 1 maraschino cherry without the stem, 1 teaspoon coconut, and then 1 tablespoon crushed pineapple. Press into the bottom of the tin, then scoop cupcake batter on top, filling a little more than ¾ full and bake 15-18 minutes.Tip:Put a few kernels of rice into the cupcake pan before the liners to make the cupcakes easier to remove from the pan and to help prevent the outside of the cupcake liner from getting greasy.