Add the sliced strawberries and sugar to a medium bowl. Gently toss to coat, cover, and set aside for 30 minutes to macerate and draw out the juices.
Add the macerated strawberries and all the juices to a large blender and puree until smooth.
Add the heavy cream and milk. Pulse the mixture a few times in the blender until mixture is combined.
Pour the mixture into the popsicle mold. Cover, add popsicle sticks, and freezer for 6 hours, or until fully frozen.
Notes
To loosen the popsicles from the molds, run the bottom of the molds under cool or lukewarm water for a few minutes. They should slide right out.
If you’d like to add fresh slices of strawberries to the popsicles for a little texture, reserve the slices of about 3 strawberries to add into the popsicle molds.