Add the frozen pineapple, coconut cream, pineapple juice, cream of coconut, lime juice, ice cubes and spiced rum to a high-powered blender. Blend on high until smooth, creamy, and thick. If the mixture is too thick to blend easily, add a small splash of extra pineapple juice or coconut cream.
Pour into chilled glasses and garnish with pineapple, maraschino cherries and a lime wedge. Serve immediately while cold and frosty.
Notes
Frozen Pineapple: You can use fresh if that's all you have, but it will make the drink have a much thinner consistency.
Cream of Coconut: Can be substituted for sweetened condensed milk or simple syrup.
Rum: White or spiced rum can be used.
Coconut Cream: Coconut cream is thicker than coconut milk. If all you have is coconut milk, refrigerate the can for 24 hours and scrape the solids off the top (this is coconut cream!).
Other Fruits: Feel free to add other frozen fruit or substitute it for the pineapple. Fruits that work well are frozen strawberries, mangos or bananas.
Make virgin piña coladas by omitting the rum.
To make a coconut-free version, substitute the cream of coconut for sweetened condensed milk or simple syrup and the coconut cream for double cream or a thick cashew cream.
Chilled glasses will help keep the cocktails extra cold, thick, and frosty for longer.
For a stronger pineapple flavor, replace the ice cubes with more frozen pineapple.
To adjust sweetness, add the cream of coconut sparingly or omit it entirely.
Leftover piña colada can be frozen in an airtight container for up to 1 week. Reblend before serving again.