01 -
Heat water in a microwave-safe container for 90 seconds. Stir in granulated sugar until fully dissolved. Set aside to cool.
02 -
Place mint leaves in a large bowl and gently mash with a muddler or back of a spoon to release their aroma.
03 -
Add 1 tablespoon (15 ml) cooled simple syrup, pineapple juice, rum, fresh lime juice, and half the lime zest to the muddled mint. Stir until well combined.
04 -
Place one pineapple slice half into each popsicle mold cavity. Stir mojito mixture and pour evenly among molds, leaving space for expansion and topping. Freeze for 90 minutes.
05 -
Combine drained crushed pineapple, remaining rum, remaining simple syrup, lime juice if any remains, and the rest of the lime zest in a small bowl. Mix, then refrigerate until needed.
06 -
After the initial freeze, divide the pineapple topping between popsicle molds. Insert popsicle sticks and return to the freezer for at least 6 hours or overnight until solid.
07 -
To remove popsicles, briefly run the outside of the molds under warm water and gently pull out. Serve immediately.